Drop HTTP method override support for methods GET, HEAD, CONNECT and TRACE
Add argument $subtypeFallback to Request::getFormat()
Remove the following deprecated session options from NativeSessionStorage: referer_check, use_only_cookies, use_trans_sid, sid_length, sid_bits_per_character, trans_sid_hosts, trans_sid_tags
Trigger PHP warning when using Request::sendHeaders() after headers have already been sent; use a StreamedResponse instead
Add arguments $v4Bytes and $v6Bytes to IpUtils::anonymize()
Add argument $partitioned to ResponseHeaderBag::clearCookie()
Add argument $expiration to UriSigner::sign()
Remove Request::get(), use properties ->attributes, query or request directly instead
Remove accepting null $format argument to Request::setFormat()
HttpFoundation Component
The HttpFoundation component defines an object-oriented layer for the HTTP
specification.