AMD has subsequently changed the specification of the Radeon RX 560. Now manufacturers are allowed to sell even slower cards with only 896 instead of 1024 cores, under the same name.

The news reaches us today through Germany based Heise, AMD has specified its Polaris graphics chip with 1024 shader cores. This makes the RX 560 faster compared to the predecessor Radeon RX 460, whose GPU offers only 896 shader cores. A while ago in Asia "D variants" (Radeon RX 560D) have been spotted, whose Polaris GPU also contains only 896 shader cores. 

Recently, however, these D models appeared on the market also graphics cards under the name Radeon RX 560, with just 896 instead of 1024 shader computing cores.  A glance at the specification site of AMD Radeon RX 560 highlights the first: here is the shader number currently with specified "896/1024" - there are now two variants of the same name. Which is a recent change? AMD has subsequently changed the specification website without informing the public and or media about it. Snapshots of archive websites indeed show 1024 Shader procs in the past.

Thanks, SH SOTN for the spot.

Radeon RX 560: AMD silently changes GPU specification