I wonder if there will be some kernel/compiler optimizations coming down the pipeline that will increase the performance even more. With the big open source push that AMD's graphics division has been doing over the past few years I wouldn't be supposed if AMD made some contributions to the kernel themselves At the very least I'm glad to see that it performs well in Linux out of the box when compared to Intel. :D
I have heard that Kernel 4.10 is the one you want to take full advantage of the new chips.