That doesn't seem to be true, at least not in my case. I have tried uninstalling the old drivers with AMDs Un-install Utility prior to installing the new 13.2 beta7 ones. I still see a lot of artefacts and flickering in games, such as Aion or Firefall.
Here is a video that I recorded yesterday:
PSU: CORSAIR TX750 V2 / MB: ASUS M4A87TD / CPU: AMD Phenom II X4 965 BE 3.4 GHz / GPU: GIGABYTE Radeon HD 7870 GHz Edition 2GB / RAM: 2x4GB Kingston HyperX DDR3 1600MHz / CASE: CM Storm Enforcer / OS: Windows 7 Ultimate x64 SP1
01:26 PM by