I really hope to see the SIMD vector related improvements come through, I know there are some independent JDK code bases that have more evolved SIMD support, but for a lot of big data processing tools, switching away from jdk based languages appears to be the way SIMD related performance improvements have been realized because of this missing crucial feature set. JDK 11 was when this stuff was first in development, and it's truthfully insane that it hasn't fully been released yet.