The Yii Framework- one to watch

There is a kind of descendant of the PRADO framework in the making, dubbed Yii.
A quote from Charlie Xue, PRADO founder:
Since 2008, the developer team of PRADO has shifted focus to developing Yii. PRADO will continue to be maintained and some features of Yii will be back-ported to PRADO.
As mentioned here, they take and [...]