Ok so a few days ago, I saw an article that said infogrames had picked up the rights to Total Annihilation. If you don't remeber this was one bad ass RTS in 97 and won game of the year. Well cavedog went under and so did the series. Infogrames has given the development rights to a korean software house, Phantagram Interactive . This place has produced a game called Kingdoms under fire which was very similar to Total Annihilation: Kingdoms.
The game is still very far off, end of 2004, but a recent interview has poped up and they saw they are exploring an xbox version.
Here is a link to the article. Don't let the page intimidate you, it is in both korean and english on the same page.