The official CakePHP API mantains a
list of deprecated stuffs in version 1.2 of the framework. You will definately need this one if you will be upgrading your application from v.1.1 to 1.2 in the future.
Unfortunately, the link to the document http://api.cakephp.org/1.2/deprecated.html seems to be now broken. If you happen to know a seperate source, please let me know by writing a comment below, thanks.