Nintendo is reportedly considering the release of a Wii-mote with its new MotionPlus accessory built in (which improves accuracy and responsiveness).
As to looking at whether or not it will be an attachment or built in - we're always looking at how hardware should evolve and where we should take it," Eguchi said, speaking at an E3 developer roundtable.
Apparently Nintendo can't decide if MotionPlus should be integral to Wii remotes, or if "it might be good to keep it as an attachment we only use for certain software".
"Unfortunately I don't have a definite direction to give you today, but it's something we'll be looking at. 