New to Overclock.net
Join Date: May 2010
To answer this. Tomorrow.
At this point in time, there isn't any need for 5.0. And 4.0 may make a small difference from next generation, but who knows. 4.0 will be availeble on Ryzen X570. (maybe also on X470 through an update).
You have to remember that the "chipset" as we used to know it is dead and is replaced by direct/almost direct lanes to CPU.