I'm still waiting to dive into the new Pen Camera which has much more improved photography and videography features over the original E-P1 and E-P2. I don't like the fact that the body has changed so much though. I was really fond of the nostalgic old school look with the leather cover.
This was interesting to me to find Olympus right away supporting their new E-PL1 with an OEM waterproof housing case. I'm not sure how much of underwater experience Olympus has, but there is a bit of security knowing it's all made to work perfectly and designed exactly for their own products. You can find the Olympus waterproof housing Available here at BHPHotoVideo.com.