I had read that AMD is planning to skip the 8xxx series naming for desktop cards (only use them for OEM chips in laptop graphics, etc) and would go directly to the 9xxx series for desktop graphics card products. The 9970 is supposed to have 4096 stream processors and I think should do 1.2 GH/s.
Then, it only provides the stable, but not for later stage. Additionally the new series. If there is no H265 hardware accelaration. Then. it is just a little improvement, not so insteresting as The people in the room know GPU is a form of ASIC,stable ones, New functions can be tested with FPGA.
4096 is currently not possible in 28nm, But AMD like to put more Cores in CU to make stronger, which is a dead loop.