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:
Pro: Supports memory size up to 2GB
Cons: TFBGA 259 pins, 12mm x 12mm, 0.65 pitch
S3 datasheet is available :
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…