14 DAY TRIAL // When AMD launched the Radeon GraphicsCoreNext architecture, which lies at the basis of Radeon R9 graphics cards and the GPUs in some APUs, it suffered some rather heated words because raw framerate didn't come with the right pacing between each frame.
That means that images on a display weren't fluid, suffering from frame rate fluctuations that made some people doubt AMD's honesty in regard to the performance of its GPUs.
An update released in September fixed the problem for most users, but it still shows up in Eyefinity multi-monitor setups, as well as CrossFireX multi-card systems.
A “phase 2” Catalyst drive will remedy this at some point in the future. It should have happened already, according to initial estimates, but now it is assumed that two months will pass before the new update comes out.
So I suppose that means the driver will accompany the Kaveri A-Series APUs in January 2014, after CES (Kaveri will take up all AMD's time during the first two weeks).