AMD needs to get their act together with drivers. Their driver is 161MB, and only goes back to the HD2000 series. They drop support for cards that were flagship cards just 2.5 years ago to "shave a few MB off the driver". Come on, nVidia is still releasing drivers that support all the way back to the 6000 series cards, and their driver file is only 159MB.
If you are going to phase out support at least do it grandually, phase out one generation at a time as you introduce a new generation. Don't just axe 3 generations of cards in one swipe, especially not when they were selling as flagship cards just 2.5 years ago. That is just way too short of a life span, I would expect at least 3 year of support with new drivers out of a card. At least long enough to get through the (common) warranty period...
Rig1: System Specs.
Rig2: A8-5600K@4.4GHz / AsRock FM2A75 Pro4 / 8GB Corsair DDR3-1600 9-9-9-24 / HD7560D / Samsung DVD-Burner / 1.5TB WD Green + 3x3TB WD RED in RAID5
Rig3: Athlon X2 4200+ / M4A79 Deluxe / 4GB G.Skill Pi DDR2-800 4-4-4-12 / GT430 / Sony DVD-Burner / 500GB WD
Rig4: Phenom II x6 1605T @ 3.6GHz / Asus M5A99X Evo / 8GB PNY DDR3-1600 9-9-9 / GTX470 & GTX470 / Samsung DVD-Burner / 1.5TB Seagate