Symfony 6.2.0-BETA1 has just been released.
Here is the list of the most important changes since 6.1:

feature #47364 [DependencyInjection] Allow array attributes for service tags (@aschempp)
feature #44166 [Config] Use better typehint in PHP Configuration (@jderusse)
feature #47956 [Notifier] Add support for editing Telegram messages (@chr-hertel)
feature #43534 [Serializer] Add SerializedPath annotation to flatten nested attributes (@boenner)
feature #47943 [Config][Routing] Nicer config syntax for PSR-4 route loading (@derrabus)
feature #46224 [Form] Add hash_property_path option to PasswordType (@Seb33300)
feature #47950 [HttpClient] Add support for „friendsofphp/well-known-implementations“ (@nicolas-grekas)
feature #47936 [HttpClient] Add withOptions() to HttplugClient and Psr18Client (@nicolas-grekas)
feature #46053 [Messenger] Add option allow_no_senders to enable throwing when a message doesn’t have a sender (@babeuloula)
feature #45907 [SecurityBundle] Allow specifying attributes for RequestMatcher (@freiondrej-lmc)
feature #47483 [HttpKernel] Make Logger implement DebugLoggerInterface (@MatTheCat)
feature #46161 [Translation] Add PhpAstExtractor (@welcoMattic)
feature #47872 [Validator] new email validation option to match with w3c official specification (@guillemfondin)
feature #47916 [Routing] PSR-4 directory loader (@derrabus)
feature #47890 [SecurityBundle] Deprecate the enable_authenticator_manager option (@chalasr)
feature #47906 [DependencyInjection] Allow injecting the current env into php config closures (@HypeMC)
feature #47902 [DependencyInjection] Add support for tagged iterators/locators exclude option to xml and yaml (@HypeMC)
feature #47801 [DependencyInjection] Allow array for the value of Autowire attribute (@willemverspyck)
feature #47864 [DoctrineBridge] Deprecate calling ContainerAwareEventManager::getListeners() without event name (@derrabus)
feature #47711 [Mime] deprecate attach/embed methods in favor of Email::addPart() (@fabpot)
feature #47832 [HttpClient] Make HttplugClient implement PSR-17 factories instead of Httplug’s (@nicolas-grekas)
feature #47817 [Security] TraceableAccessDecisionManager: fix inspecting voters of custom access decision managers (@sarbanha)
feature #47750 [Console] Show available commands in namespace when running namespace as command (@wouterj)
feature #47730 Ban DateTime from the codebase (@WebMamba)
feature #47496 [FrameworkBundle] Make the Router cache_dir configurable (@mpdude)
feature #47511 [Form][PropertyAccess] Allow optional property accesses (@fsoedjede)
feature #47068 [Messenger] Deprecate MessageHandlerInterface and MessageSubscriberInterface (@alamirault)
feature #47460 [Messenger] add dedicated method for disabling instead of passing boolean flags (@xabbuh)
feature #47643 [WebProfilerBundle] Update the mailer panel (@javiereguiluz)
feature #47710 [Validator] File: add option to check extension (@dunglas)
feature #47734 [Validator] add the getCause() to the ConstraintViolationInterface (@xabbuh)
feature #47308 [Console] Allow limiting the height of a console section (@wouterj)
feature #47243 Add context option to configure the indentation of nested nodes for YamlEncoder (@dbu)
feature #47462 [Mime] Simplify adding Parts to an Email (@fabpot)
feature #47683 [DependencyInjection] Deprecate numeric parameter names (@HeahDude)
feature #47377 [HttpKernel] Use Accept-Language header even if there are no enabled locales (@MatTheCat)
feature #47588 Add warning for possibly truncated inputs in QuestionHelper (#47586) (@pbek)
feature #47665 [WebProfilerBundle] [WebProfilerPanel] Update the configuration panel (@javiereguiluz)
feature #47630 [FrameworkBundle] Add semantic config for new terminate_on_cache_hit HttpCache option (@wouterj)
feature #47595 [HttpFoundation] Extract request matchers for better reusability (@fabpot)
feature #47535 [TwigBridge] Expose current route in AppVariable (@HeahDude)
feature #47536 [TwigBundle] add option for configuring custom HTML to text converter services (@xabbuh)
feature #46064 [Security] Add a ChainUserChecker to allow calling multiple user checkers for a firewall (@mbabker)
feature #47445 [FrameworkBundle] Allow secrets vaults to be used directly outside Symfony (@AndreasA)
feature #47148 [WebProfilerBundle] Profiler redesign (@javiereguiluz)
feature #38996 Remove the default values from setters with a nullable parameter (@derrabus, @nicolas-grekas)
feature #42593 [Validator] Add the When constraint and validator (@wuchen90)
feature #47525 [Uid] Add UuidV7 and UuidV8 (@nicolas-grekas)
feature #47515 [Uid] Add MaxUuid and MaxUlid (@nicolas-grekas)
feature #47407 [Console] Terminal Color Mode refactoring and force Color Mode (@julien-boudry)
feature #47507 [Uid] Add interface for getDateTime() and apply to relevant UIDs (@shrikeh)
feature #47236 [DependencyInjection][VarExporter] Generate lazy-loading virtual proxies for non-ghostable lazy services (@nicolas-grekas)
feature #39622 [Messenger] Be able to get raw data when a message in not decodable by the PHP Serializer (@lyrixx)
feature #47311 [FrameworkBundle] Update ContainerDebugCommand to add parial search for tags (@vshevelev, @BOB41K1987)
feature #47367 [DependencyInjection] Handle INI arrays (@MatTheCat)
feature #47373 [Notifier] Add Chatwork Notifier Bridge (@Ippey)
feature #47363 [HttpKernel] Replace ArgumentValueResolverInterface by ValueResolverInterface (@nicolas-grekas)
feature #47101 [DependencyInjection] Allow service subscribers to return SubscribedService[] (@kbond)
feature #40152 [Messenger] Pass sender details to SendMessageToTransportsEvent (@Jeroeny)
feature #41171 [Messenger] Add simple transport based rate limiter to Messenger (@bobvandevijver)
feature #47295 [PhpUnitBridge] add ability to mock the hrtime() function (@xabbuh)
feature #47264 [String] Add support for emoji in AsciiSlugger (@lyrixx)
feature #47263 [Intl] Update EmojiTransliterator to translate emoji to github and slack short code (@lyrixx)
feature #45418 [Messenger] Add HandlerArgumentsStamp (@enumag)
feature #47094 [HttpKernel] Use xxh128 algorithm instead of sha256 for http cache store key (@Pascal Woerde)
feature #46000 [Workflow] Mark registry as internal and deprecate the service (@lyrixx)
feature #46428 [Security] Access Token Authenticator (@Spomky)
feature #47225 [Mime] Re-allow addIdHeader to be used for ‚In-Reply-To‘ and ‚References‘ headers (@AlbinoDrought)
feature #47190 [Mailer] Add a way to change the Bus transport dynamically (@fabpot)
feature #47201 [Mime] Add a way to control the HTML to text conversion (@fabpot)
feature #47202 [Serializer] enable JSON_PRESERVE_ZERO_FRACTION by default (@dbu)
feature #39306 [Messenger] Add TransportNamesStamp to change the transport while dispatching a message (@asilelik, @fabpot)
feature #47196 Allow extending #[When] attribute (@ruudk)
feature #47191 [Mailer] Add a way to inject Stamps when sending an email via Messenger (@fabpot)
feature #47170 [Mailer] Use better error code when auth fails (@fabpot)
feature #46978 [Security] Allow using expressions with the #[IsGranted] attribute (@HypeMC)
feature #46571 [Messenger] Add new messenger:count command that return a list of transports with their „to be processed“ message count. (@ktherage, @ogizanagi, @EXT – THERAGE Kevin)
feature #43865 [TwigBridge] Add support for toggle buttons in Bootstrap 5 form theme (@ker0x)
feature #46683 [Ldap] Deprecate ‚{username}‘ parameter use in favour of ‚{user_identifier}‘ in LDAP configuration (@EXT – THERAGE Kevin)
feature #46514 [HttpKernel] Add option to render Surrogate fragment with absolute URIs (@Kern046)
feature #46715 [Clock] A new component to decouple applications from the system clock (@nicolas-grekas)
feature #42355 [HttpKernel] Bugfix/last modified response strategy (@aschempp)
feature #47080 [Mailer] Add new events (@fabpot)
feature #47075 [Mime] Change the way we avoid rendering an email twice (@fabpot)
feature #46755 [Intl] Add EmojiTransliterator to translate emoji to many locales (@lyrixx, @nicolas-grekas)
feature #47062 [Console] Don’t cut Urls wrapped in SymfonyStyle block (@fchris82, @GromNaN)
feature #45987 [Notifier] Add from in SmsMessage (@alamirault)
feature #46142 [ExpressionLanguage] Add support for null coalescing syntax (@mytuny)
feature #47050 [Form] Allow TranslatableInterface to the FormType help option (@alamirault)
feature #46110 [RateLimiter][Security] Improve performance of login/request rate limiter (@Seldaek, @wouterj)
feature #46895 [Notifier] Introduce PHPUnit constraints and assertions for the Notifier (@ismail1432)
feature #47049 [Mailer] Throw a more specific exception when a BodyRendererInterface is needed but not configured (@fabpot)
feature #47040 Add a mailer:test command (@fabpot)
feature #46242 [Console] Add support for resuming a ProgressBar (@yivi)
feature #46962 [Mime] Add DataPart::setContentId() (@fabpot)
feature #47038 [Notifier] Add Notification::exception() (@fabpot)
feature #46944 [Console] Add Ansi8 (256 color) support, improve true color (Ansi24) support detection (@julien-boudry)
feature #47034 [Mime] Simplify code (@fabpot)
feature #47018 [Console] Zsh shell autocompletion (@adhocore, @GromNaN)
feature #46591 [Finder] Add methods to sort by extension & size (@sandoba)
feature #46126 [Finder] Case insensitive file sort (@hmoreau)
feature #45034 [HttpFoundation] Rename Request::getContentType to getContentTypeFormat (@MarkPedron)
feature #46806 [Cache][WebProfilerBundle] Add adapter class to Cache DataCollector (@Jean-Beru)
feature #44902 Add visibility context option in PropertyNormalizer (@alamirault)
feature #46567 [Security] [LoginLink] Set custom lifetime for login link (@mbrodala, @fabpot)
feature #46599 Add „negate“ option to Expression constraint (@fmata)
feature #46821 [FrameworkBundle] Add resolve-env option to debug:config command (@alexandre-daubois)
feature #46580 [SecurityBundle] Add shortcut option to enable logout CSRF protection (@wouterj)
feature #46814 [FrameworkBundle] Add service and alias deprecation message to debug:container <name> output (@94noni)
feature #47008 [Messenger] Add options to FailedMessagesShowCommand (@Florian Guimier, @fabpot)
feature #45977 [Validator] Add the match option to the Choice constraint (@fancyweb)
feature #46338 [Security] Allow configuring a target url when switching user (@94noni)
feature #46326 SMTP Transport to provide the (final) Message-ID if available (@Raphaël Droz)
feature #43854 [DoctrineBridge] Add an Entity Argument Resolver (@jderusse, @nicolas-grekas)
feature #46315 [Mailer] max_per_second option configurable via DSN (@gassan)
feature #46118 [Security] Don’t allow empty username or empty password (@bikalbasnet)
feature #46229 [Messenger] Make Redis messages countable (@Jean-Beru)
feature #41406 [Security] Add a method in the security helper to ease programmatic logout (@johnkrovitch, @chalasr)
feature #45404 [Mailer] allow custom hosts for ses+smtp with amazon mailer (@jrushlow)
feature #45945 [Uid] Added toHexString method to AbstractUid class (@aurimasniekis)
feature #46642 [DoctrineBridge] Add NAME const for UID types (@marcelsiegert)
feature #46502 [Dotenv] Variable filter added to debug command (@rmikalkenas)
feature #46211 [Mailer] Add Infobip bridge (@B-Galati)
feature #46773 [VarDumper] Add FFICData and FFICType types (@SerafimArts)
feature #46946 [Form] ChoiceType choices must support TranslatableInterface (@alamirault)
feature #38903 [FrameworkBundle] Add „Usages“ to debug:container output (@Bert ter Heide, @bertterheide)
feature #46901 [Console] Be explicit about the completion API version (@wouterj)
feature #46752 [DependencyInjection] Use lazy-loading ghost object proxies out of the box (@nicolas-grekas)
feature #46880 [HttpKernel] Add #[Cache()] to describe the default HTTP cache headers on controllers (@nicolas-grekas)
feature #46751 [VarExporter] Add trait to help implement lazy loading ghost objects (@nicolas-grekas)
feature #46906 [TwigBridge] Add #[Template()] to describe how to render arrays returned by controllers (@nicolas-grekas)
feature #46907 [Security] Add #[IsGranted()] (@nicolas-grekas)
feature #46183 Hide sensitive information with SensitiveParameter attribute (@GromNaN)
feature #46896 Console/SymfonyStyle: Add Multiselect to choice() (@julien-boudry)
feature #46883 [DependencyInjection] Add shuffle env processor (@ostrolucky)
feature #46846 [Notifier] Add Zendesk Notifier Bridge (@stloyd)
feature #46001 [HttpKernel] Add ControllerEvent::getAttributes() to handle attributes on controllers (@nicolas-grekas)
feature #46854 [FrameworkBundle] Make AbstractController::render() able to deal with forms and deprecate renderForm() (@nicolas-grekas)
feature #41274 [Security] Add a method in the security helper to ease programmatic login (#40662) (@johnkrovitch, @chalasr)
feature #46831 Add deprecation when the session is not FlashBagAware (@VincentLanglet)
feature #46491 Introduce FlashBagAwareSessionInterface (@VincentLanglet)
feature #46813 [Form] Provide string keys when iterating on a form (@VincentLanglet)
feature #46680 [Serializer] Provide context information from attribute for promoted properties (@DanielBadura)
feature #46564 [DependencyInjection] Add Enum Env Var Processor (@jack-worman)
feature #46763 [HttpCache] Do not call terminate() on cache hit (@Toflar)
feature #45997 [FrameworkBundle][HttpKernel] Add deprecation warning to show HttpKernel::handle() will catch throwables (@Nyholm)
feature #46714 [Mailer] Deprecate OhMySmtp Transport, Create MailPace transport (@Holicz)
feature #46771 [Yaml] Add support for !php/enum *->value syntax (@nicolas-grekas)
feature #46395 [Notifier] Add Contact Everyone Bridge (@franckranaivo)
feature #46724 [Notifier] Add SMSFactor bridge (@Gwemox)
feature #46741 [DependencyInjection] Allow using ghost objects for lazy loading services (@nicolas-grekas)
feature #46675 [Serializer] Add support of true built-in type (from PHP 8.2) (@bobahvas, @alexandre-daubois)
feature #46663 [Serializer] Deprecate autowiring aliases pointing to concrete normalizers (@chalasr)
feature #46584 [Security] Enforce maximum username length in UserBadge (@wouterj)
feature #46066 [Security] Add an easier way to get the current firewall configuration (@Kocal)
feature #46614 Remove Debug component leftovers (@chalasr)
feature #46566 [Serializer][WebProfilerBundle] Show serializer collector info in toolbar (@ogizanagi)
feature #46569 [Serializer][WebProfilerBundle] Collect & show caller source code (@ogizanagi)
feature #46094 [Security][SecurityBundle] Move the Security helper to SecurityBundle (@chalasr)
feature #46518 [Validator] deprecate the loose e-mail validation mode (@xabbuh)
feature #45985 [TwigBridge] Add form_label_content and form_help_content block to form_div_layout (@alexander-schranz)
feature #46430 [Routing] Add Requirement::POSITIVE_INT for common ids and pagination (@HeahDude)
feature #46279 [DependencyInjection] Optimize autowiring logic by telling it about excluded symbols (@nicolas-grekas)
feature #46452 [DependencyInjection] Add Hydrator::hydrate() and preserve PHP references when using it (@nicolas-grekas)

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