Hey, 82-T/A! I'm glad to see your interest!
For the questions that you had asked, I will answer them in detail here. Information is available in the link that Leviathan posted above but I figured it would be nice to have a personal reply directly from the developer!
I will be using Mars from Gustav Holst's "The Planets" as well as the rest of the entire collection. These will be available as part of the sound track to the game was well as the rest of the sound track for the game (which, contrary to popular belief, is not Techno).
The game is a complete rewrite of the original game. While OUTPOST was a wonderful game in all respects (well, the idea was wonderful), the game itself was never finished. Plus, it was done between 1992 and 1994, before the advent of Windows 95 and DirectX.
OP:MIA is taking the conecepts introduced in OUTPOST and rewriting them into a modern game taking full advantage of the hardware and software abilities within the 32-Bit operating environments (Windows 95 + and DirectX as well as new video cards and sound equipment). OUTPOST:MIA will also take advantage of the networking abilities available today to the common user such as yourself. OP:MIA will add several aspects to the game that were not previously availble such as network play, streamlined graphics, a modern User Interface, full sound track, enhanced graphics displays, full immersion into ones environment through the use of synchronized unit/structure animation, etc.
Also, the Research interface will be much improved allowing providing the user with a more point-and-click interface in a graphical view with full descriptions over the bland and unintuitive interface provided by the original game.
So, much as been done in the way of redesign and graphics. Actually, I have three structures completely ready to be used in the new engine as it's available right now. Network play is something that will be added before the final release of the game. Expansion packs will probably be made for the game. All tools used to create the game will be available for use by others.
I hope I have been able to answer your questions. Should you have any others, please feel free to ask me either by this forum or through e-mail. I can also be contacted via AIM with the username 'outpostmia'.