I just stumbled across the page for this over on GameSpot today, didn't even realise anything like this was happening. So for any others like me who didn't know, it's a PS2 Greatest Hits/Xbox Platinum Hits release of the original game, but along with the $20 price, it's also going to have 24 new cars, a full new city (Tokyo), and a few other things, due to be released March 13th. Sounds fairly interesting, although I haven't decided if I'll pick it up yet. I thought the original version was pretty decent, much better than the NFS Underground series in my opinion, but not quite as good as NFS Hot Pursuit 2 (PS2) or Most Wanted. So I haven't decided yet if the new content interests me enough to spend the $20 on it (and if I should keep or sell the original if I do get the new version). There does seem to be a decent amount of new stuff though, and I do like some of the new cars. Another nice thing is that it will be compatible with game saves from the original version so you don't have to start over completely, and both versions will be compatible with each other for online play.
More info can be found here:
Yea i've seen that too. Didn't know about the new cars and new city. Geez I should've waited. I loved the normal Dub Edition. I'd love to be in Tokyo again(as it was in MCII).