Android team has been forced to accept Kotlin without the Java ecosystem is an oxymoron, thus not only is ART updatable since Android 12, Java 17 LTS is now the latest supported version.

And on the SDK side, they need to use whatever InteliJ requires.

Java 8 is not EOL.

It is not, if you pay for support.

No, you can just download Adoptium, Azul and probably other builds. They're up to date and will be for few years. Not sure about Oracle, but wouldn't recommend it anyway.

They now seem to work with Java 11.