I have the iPad1 and I'm planning of getting the iPad3.
However I will have a close look at it first. The upgrade would have to be really major (retina display, 4G, faster processor than iPad2, same or better battery life) and I will also have to see how iOS is going to evolve. So I don't think I will get it before May anyway. However I will try to get a top of the line model (3G/4G, 128GB) unless it is insanely expensive. But I expect similar price points as before so I think it will be around $850.
My main issues are the lack of a good stylus. ordered the cregle ipen to fix that problem. i hope it will work with the iPad3 as well. if the 3 doesn't work with the cregle than this is a no go.
Then there is the lack of a file system and the fact that I can't transfer files via USB to individual apps without going through iTunes.My work computer is not allowed to have iTunes or local Wifi networks so transferring files is a major hassle.