All good things must come to an end. AMD has officially ended driver development efforts for older, non-GCN-based Radeon cards. All cards in the Radeon HD 5000 and 6000 series are now considered legacy products. Radeon HD 7600 and lower cards, along with HD 8400 and lower cards, are also entering sunset status today.
The company says those products have reached their "peak performance optimization" as of today. AMD is now focusing its software development efforts on products built with the Graphics Core Next (GCN) architecture. The company isn't saying farewell to the legacy GPUs without a proper send-off, though. The latest beta version of AMD's redesigned Radeon Software Crimson Edition is the last driver that will support these older cards.
For owners of legacy products who are looking to play it a little safer, AMD's WHQL-certified Catalyst 15.7.1 drivers will remain available on Windows Update for Windows 7, 8.1, and 10. Users can opt to download the last Catalyst release for their cards from AMD's driver download page, too.