The W90 is Pentax's solid successor to the W80. It's got a new strap, LEDs around the lens for close illumination and is slightly more resistant, rated to 6m of water and 1.2m drops.
The new case is nicer than the old, and the innards seem pretty similar to the older model (which I liked). There's the 12mp sensor, 720p video recording and digital shake reduction as well as a 5x 28-140mm equivalent lens. I liked the old one, so I'll probably like the new one. (Although perhaps not quite as much as I like the new rugged Lumix TS2.) [Pentax]