The new part clearly shows a front-sided hole that would leave room for a front-facing FaceTime camera. While we've seen similar parts before, this part is clearly marked as an Apple part "Apple (c) 2010"... The part is also stamped with April 29, 2010, indicating that the build date is relatively recent.
HardMac recently published photo illustrations that show a camera and flash on the rear of the device. Apple is expected to release the new iPod touch in September.