RK2818 frequency will reach 1GHz.
To improve the speed control, Rockchip will replace the memory from the SDRAM DDR. The new platform will support 1024 × 768 screen resolution(RK2808 support only 800 × 480) .
Rockchip said the new platform will be equipped with 2.1 version of android, and will later provide version 2.2 upgrade support.
New models with RK2818 processor expected by the end of August.
source imp3

Digital8.org
SlateDriod