Long time, no see..! 
We’ve had a Plethora of Primordial Plastroned Pandemonium plastered all over the place! The newest of updates is a sneak peek of the new cartoon coming up in the latter half of 2012. Mind you, it’s a rough concept. I’m sure we’ll be seeing more detailed work as the time comes… 
Check it out here: http://insidetv.ew.com/2011/03/10/teenage-mutant-ninja-turtles-nickelodeon/