AMD is rumored to drop support from their Catalyst drivers for all cards prior to HD5000 that includes the HD2000, HD3000 and HD4000 series. The last package that will have support for pre HD5000 cards will be Catalyst 12.6, that’s in July. In other words, all DirectX 11 incapable GPUs will stop being supported by AMD.
This “change” should be in close relation with the new V9 of AMD drivers. From what I know, Linux Drivers are certain to be affected by AMD’s decision. As for Desktop drivers, this remains to be seen. We are used to AMD making poor decisions, not the first and certainly not the last; this is just one in a long line of such decisions.
Edit: This is now official, Catalyst drivers for pre-HD5000 Cards are going to be released every 4 months. AMD feels that HD2000 HD3000 and HD4000 Cards drivers are “maxed out” on performance and features and the quarterly drivers will only feature critical updates and address specific issues. Furthermore, pre-HD5000 Cards will not benefit from WDDM 1.2 driver level features with Windows 8.