I used the search function and donīt find a info related on this...
This is just for info...
http://twitter.com/eitjuhh
donīt know if he is known as a dev in the scene or not but it seems he is working on a CFW 4.0
some tweets from him
i'm very busy with it.. i have decrypted the lv0

.. have decrypted de bootldr

..
i have not testing my cfw 4.00 at the moment!.. and it is not finished atm! i do my best to fix it asap!