[krzyk]

Linkable features https://openjdk.org/projects/jdk/22/

For me personally the most interesting one is JEP461 (Stream Gatherers) https://openjdk.org/jeps/461

This will allow addition of interesting stream operations.

[cryptos]

This is indeed nice. However, static extension methods would have made this feature simpler (and more generic).

[krzyk]

And would also make code harder to read. I was always reluctant to use those in Scala because of this.