BeyondUnreal has a pretty lengthy chat log with Epic Games answering questions about the upcoming UT3. Of note, this game will include the Linux client on the disc.
All in all, the three hour Q&A (and more than 110 answered questions!) yielded plenty of new info, such as the inclusion of the old UT favorite - CTF-Hydro - and clarification of many other things. Thanks Epic Games and thanks everyone for for participating... this was your event and it was a rousing success.