Yup, it will be. The tech guys are doing some work on it at the moment, but it should be back up soon.
@Felkins: Sorry, it's still 32-bit - that kind of thing isn't easy to change. There will be some new modding options, however.
@SageWon: Agreed on Empire Tree. I'm really hoping we can look at this and do something. I have some ideas for how I would like it to be...
@DirtySanchezz: I can't speak too much as to multiplayer at the moment, but we are treating Rebellion like it's a semi-sequel and will be marketing it to new players.