konstantinfo

Currently Yii has two major versions: 1.1 and 2.0 RC. The 1.1 version is currently in maintenance mode. Version 2.0 is a rewrite of Yii and it has adopted the latest technologies and protocols.
For more details please visit: http://www.konstantinfo.com/blog/what-are-the-major-enhancement-in-yii-2-0-rc/