First, some news.
We're working on the first major update for the game over the next two weeks or so. This will include some new gee-whiz graphical stuff, including normalmap / depthmap support for qualified hardware (geforce series 8+, newer Ati hardware) that will make the game a bit prettier, and a bunch of special-effects stuff we've been working on, along with new maps and a second campaign.
Secondly, we've gotten going on support for Linux customers, and that will be taken care of soon.
Third, we're putting out a patched version of the game and demo today, with the hope that this will resolve problems some players have had with the MegaConstructor (many thanks to the folks who have helped us track this bug down on our Forums). The official patch should be available on Stardock sometime in the next 48 hours, and the Demo will be replaced when we're done with the Stardock update.