Reports were claiming that the PS3 version of Portal 2 would support Playstation Move, but Valve have now laid that rumour to rest:
"There's a story making the rounds regarding Portal 2 support for PS3 Move. Unfortunately this quote was "lost in translation" -- Portal 2 does not include support for Sony's motion controller." /Valve
Oh well, I'm sure Move owners will be able to enjoy just as much with a standard controller.