Hi,
I am happy to announce that cocos2d-iphone v2.1-beta3 is available for download:
http://cocos2d-iphone.googlecode.com/files/cocos2d-iphone-2.1-beta3.tar.gz
Highlights
- Many JS improvements:
--> compatible with cocos2d-html5, improved JS API
--> compatible with Chipmunk-JS (beta)
--> New JS tests/examples: CocosDragon, and reusing all the JS tests from cocos2d-html5
- New ClippingNode
- Added Gesture support for OS X
- Much better integration with CocosBuilder
- "Auto draw" support in RenderTexture (beta)
- Updated 3rd party components (Chipmunk, uthash, SpiderMonkey, jsbindings, CocosBuilder Reader)
- Many bug fixes in different components
Full Changelog: https://github.com/cocos2d/cocos2d-iphone/blob/release-2.1-beta3/CHANGELOG
Many thanks to all the contributors!!
https://github.com/cocos2d/cocos2d-iphone/blob/release-2.1-beta3/AUTHORS
Understanding JS:
- cocos2d v2.1 comes with JavaScript as scripting language: JS is fast and has a small footprint.
- This is an optional component. So, you are not required to use it.
- If you decide to use it, you can create your whole game in JS; or use JS only for basic things and develop the hard-core in Objective-C.
- AND: Should you decide to develop your whole game in JS, you will be able to run it WITHOUT CHANGES in any browser (by using cocos2d-html5) and on Android (by using cocos2d-x)
More info about cocos2d and JS: https://github.com/cocos2d/cocos2d-iphone/wiki/cocos2d-and-JavaScript
JS Examples:
CocosDragon: 50% developed using CocosBuilder, 50% developed in JS

JS Tests: Do you remember the cocos2d Objective-C tests ? Well, now they are in JS too.
Try the web version: --> JS Tests Web <--


Moon Warriors: Developed 100% in JS.
Try the web version: --> Moon Warriors Web <--

Watermelon With Me: A Physics game developed 90% in JS and 10% with CocosBuilder

Enjoy!