According to a Japanese site, AMD will release the new parts on May 28th, and the fastest of the lot will be the A10-7870K. This part is clocked at 3.9GHz stock and 4.1GHz Turbo, and boasts R7 graphics with 512 shaders (still no word on GPU clocks though).
As for the rest of the Kaveri line, it’s unclear whether we will see a lot of changes. The new A10-7870K should sell for about $140, which will make it marginally more expensive than the A10-7850K and A10-7800.
— Tsukumo_eX. (@Tsukumo_eX) May 25, 2015
Source: FUD Zilla