RELEASE NOTES: JDK 28

ListFormat Single Quote Handling Fixed

The JDK reference implementation for [java.text.ListFormat] is no longer affected by [java.text.MessageFormat] single quote escaping semantics. For example, previously, a list pattern such as " '{0}', {1} " may have incorrectly formatted List.of("bar", "foo") as: " {0}, bar ". ListFormat is now updated to always treat single quotes as literal characters when read from a pattern.

This change is observable for ListFormat patterns that contain single quotes. As a result, it primarily affects application-supplied custom patterns that contain them.

Custom ListFormat Patterns Are Validated More Strictly

[java.text.ListFormat.getInstance(String[])] now validates custom list format patterns more strictly. Only the exact placeholders "{0}", "{1}", and "{2}" are accepted, and "{2}" is accepted only in the three-element pattern. Patterns with duplicate placeholders or curly braces outside valid placeholders now cause an [IllegalArgumentException] to be thrown.

This change affects only application-supplied custom patterns passed to [ListFormat.getInstance(String[])]. Locale-derived ListFormat instances are not affected.

Capture Named Group information in TLSHandshakeEvent

The jdk.TLSHandshakeEvent JFR event now records the named group that is negotiated in a TLS handshake. A new field named namedGroup has been added to the event.

LuxTrust Global Root CA removed

The following root certificate has been removed from the cacerts keystore: ``` + alias name "luxtrustglobalrootca [jdk]" Distinguished Name: CN=LuxTrust Global Root, O=LuxTrust s.a., C=LU

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