If by "issues with ATI drivers" you mean the fact that fglrx does not work, then no.
If, however, you mean "do Radeon and AMDGPU work with AMD graphics?" then that was not an issue, as they have worked all along.
Will fglrx be back? Maybe, maybe not. Not likely for 16.04. AMD is rooting up and repairing the entire scope of its Linux drivers to better support Linux -- and it's causing turmoil. But it is all being done, at great cost to AMD, to give the open source community what we have been asking for for years.
Is 16.04 the worst release ever? Probably. Every new release is labeled the worst release ever by some.
Ubuntu 16.04????
