I remember this being mentioned a while back, guess its coming out now?
http://www.gamespot.com/6136426?part=rss&tag=gs_reviews&subj=6136426
Of course, for most of us this is almost entirely useless, though its worth noting that the review suggests that you can run any mod you please with this version of the game.
Naturally, the reality may be a different story as you're going to be bound by the limitations of the phone (storage, memory, processing power etc) so I doubt ALL maps and mods would work.
Someone on another page pointed out that you could use this as a portable demo player though - so you could possibly watch your QDQ or whatever on the way to work or what have you.
Another marginally useful thing (I guess) is that you could maybe use it as a way to test your maps and stuff on 'low end' hardware, if you don't have some shitty old PC lying around.