hi, i implemented a simple 3D extension for cocos2dx and it is open source.
because it is very easy to let cocos2d-x support 3D, so the ToolKit is very small, just take a few days to wrote.
hope it is useful to some pals.
gitHub link: https://github.com/wantnon2/3DToolKit-for-cocos2dx/wiki/Introduction
yeah, i heard about that too.
because i currently need some 3D effect in my game, do not want to wait for the yet to come cocos3d-x, so i implemented it myself.
and i found it is interesting and not difficult :)