A mapping buddy of mine(Kilter) from the UT2k4 days has recreated the Bombing Run gametype for UT3. Not only that but he has done a fantastic job.
He got intouch with me via steam and let me know about his progress. I may get him to post it here on Moddb, but until then you can track its progress on Kilter's Funhouse. I am so excited about BR's comeback that I have temporarily changed focus from the mod that I am trying to put together for steam that I have started creating a map for UT3. I will post the finished product on my profile. I will make it CTF first just so folks can have fun playing it until the final touches on his mod are finished.
The map that I have in the works is the first of hopefully many. It is also a never before seen concept in FPS gaming. Updates to come.