I had a look around ( wanted to catch up on the goss ) and found this site all about the new engine for the 380. Even has a PIC :).

http://autoweb.drive.com.au/cms/A_104984/newsarticle.html

Also this one that goes into some depth on the engines workings.

http://www.nextcar.com.au/n.mitsubishi.2005.engine.PS41.05jun.html

Best i can find atm.