I hope in next release they will support GCN architectures so I will be able to run it on my AMD PC (my GPU is Kaveri APU). LLVM/Clang in base is a big change
Also they now support USB version of AR9271 chip, so I finally have wireless support (and it works better than in gnu/linux)
And I hope they will fix xhci(4) bug in 6.3 release.
BTW, 6.2 is released october 9, 2017, not october 9, 2018.