There are several reviews out now on the new Tapwave Zodiac. We wrote a short first-hand review a couple weeks ago.
I guess i just read the longest one of all. Judie and Julie at The Gadgeteer go at it at great length. Its worth a read, albeit a long one.

From the Review:
Julie: "So, should you buy the Zodiac, or not? I'm still trying to make up my mind on that question... Since I've been using a Pocket PC for several months, it feels strange to be using a Palm OS device again. I'm not sure the Zodiac is the right PDA for me. But as a game device, it's a heck of a lot of fun! I just don't know if I will play enough games to justify it as a $399 Game Boy, when I already have a $99 Game Boy."

Julie: "I on the other hand, have been using a Palm for a while, so other than the Graffiti2 and getting used to the new screen orientation, this one just feels like home. You wanna talk about justification? How do I justify leaving a $799 NZ90 with a 1GB Memory Stick for this? But believe it or not...I am going to."
Read the Full Review at The-Gadgeteer.com

See Also:
Big News: First Official Photos of Sony PSP
Tapwave Zodiac is the best Palm PDA
I4U Gadget Flyer 2