Comment 4 for bug 1035581

there is a hidden web page I discovered that doesn't appear to be navigable to from the developer portal, but has working code on it
http://developer.ubuntu.com/api/ubuntu-12.10/javascript/uwapi-ref.html

It does mean that you can't write a webapp and target 12.04 and 12.10 with it unless you wrap the webapps API with some compatibility layer because there are now two incompatible versions of the API with the same version number in the init call.