I agree there would have to be a shed load of changes to make buying a new one really worth it!Good choice, you won't regret it even if there's a revised iPad coming out in April...there's going to be little difference anyway!
To those of you preparing a all lot of books, Magazines, and Songs.
See that your iTune is defined NOT to sync everything with your iPAD.
When the time comes, just copy ( Select and drag) all the contents from the librery directly to you device area.
Only thing you may sync is the Application. Prepare some free games and free application.
Do not JailBreak Yet.
After few days, make a backup.
After 2 or 3 weeks, see if you can JailBreak properly.