The PDK is being released in March at the Game Developer Conference, and they've been working with gameloft, EA mobile, Glu and some more game companies. They're available starting today, in the Palm store. Updating
Now EA is demoing Sims 3 on screen. It looks exactly like the Sims 3 game on the iPhone, and the graphics are comparable to what I played with on iPhone 3GS. Scrolling in and out actually might be faster than on the iPhone 3GS, but I'll have to do a side-by-side to tell.
Now Need For Speed, being demoed live. The graphics seem pretty good.