None of the cards with HDMI 2.0 can put out 60 fps at 4K with decent settings. If you plan to get 2 of them then stop playing your PC games on TVs without freesync or G-sync and get a monitor. TVs are mainly for movies and console games which don't do 4k at 60fps either.
I think all the benchmarks here showed >30 fps.
I kind of understand the issue here though. If bragging about it being a good 4K card, one has to recognize that right now much of the 4K display tech is in TVs with HDMI.
I think there are some good 4K panels coming out with more connections though.
At this point you'd really have to do your homework on this stuff to make sure it all matches up right. I'm waiting at least another generation to let it all sort out. But not putting HDMI 2.0 on the card is a really bizarre decision on AMD's part.