Well, well, well, what do we have here? Mark Rein dropping more details of Unreal Tournament 3? First was the Gears 2 content tease, now the assumption that the 360 version wouldn't see mods whatsoever seems to be a thing of the past. In the same interview with OXM UK, Mark Rein said "We know some of these great mods are going to play a role on Xbox 360, even if we have to get some people and bring them over ourselves." "We'll figure it out."
Now while this is good news in that any form of mod on 360 now is good news, but it's nothing to get too excited about just yet. See, Mark Rein notes that the game will probably not ship with any sort of ability to exchange user created mods, but that Epic would have a solution at some point in the game's future. From the sound of things, and taking into account Microsoft's digital distribution system, UT3 360 will probably have some free (we would hope) DLC at some point in it's life that adds the best of the community-created content.