I see that there is a new stock firmware available today for the V811.

http://pan.baidu.com/s/1cMLCY

the Google translated info says:

1, amended Known Problems
2, optimize system performance, enhanced system stability
3, pre-updated and optimized apk

No idea if it is new android version or not.

I imagine this will be coming to other Onda tablets soon

on this page

http://pan.baidu.com/share/home?uk=389436537#category/type=0Pingu