This is a story that needs more research. The Phoblogger saw a specially-modified version of the Olympus EP1 at PDN PhotoPlus Expo 2010 in November. It is apparently being modified by another company but would appear to have Olympus's blessing.
This is a 'Pen' camera with 12 megapixel resolution. It has live view and since the same sensor is used for imaging, focussing and exposure, it should work well for IR.