On 2006, CPU-maker AMD acquired GPU-maker ATI for $5.4 billion. Recently, AMD decided to phase out the ATI brand believing that having two brands is unnecessary especially when they will start offering CPU and GPU (APUs) in one package in the future.
ATI loyalists may feel irked when they see the AMD brand splattered on their Radeon and FusionPro GPUs that will be ship later this year. However, not much will change with the ATI GPUs except for the nomenclature.
Kinda cool to see Intel and AMD in one desktop package though especially on those Intel and ATI-powered iMacs.