It's marked as Sochip S3 not Allwinner.Who know when it will be available for small orders on aliexpres / taobao ...
The V3s successor (although not replacement) is more likely the V3:http://www.allwinnertech.com/index.php?c=product&a=index&id=37
Pro: Supports memory size up to 2GBCons: TFBGA 259 pins, 12mm x 12mm, 0.65 pitch
Goog news, S3 datasheet is available : http://www.sochip.com.cn/s3/index.php?title=What_is_S3_%3F
Awaiting to see this chip on aliexpress / taobao / etc...Would be happy to know rough price .
Successor to V3 is the V5 which is already shipping in a few cameras...
A small video on it...