Hello Giotto,
Welcome to the forums!
Giotto wrote:1) I saw that there are continuous updates, so i wonder whether it's opportune to order it now;
If you order it now, you'll get a download link for the base version and then you'll be able to apply the latest version on top. Indeed, we're releasing patches on a constant basis (so far, we have been releasing patches every Friday), but by buying to game you are automatically entitled to download them, so there's no need to wait if you want to play the game now
Giotto wrote:2) i read that Space Station building and Mission to Mars are included but is it real?

....any videos i saw, there are only missions to moon up and
no MIR or Freedom Space station, or Shuttle missions
The ISS and the Mission to Mars will be included in parts 2 and 3 of the game, respectively. Parts 2 and 3 are add-ons that will be sold separately at a later stage. We don't have a release date for those and we don't know the pricing either. At the moment we're pretty much focused on getting part 1 done
Giotto wrote:3) in
http://www.slitherine.com/games/BA_SPM_Pc is written:
"In campaign mode, you will be able to play as the Director of either NASA or the Soviet Space Agency in order to beat the other side to be the first on the Moon and this is where the campaign ends".....can you really play as Soviet Space Progam manager and develop all Soviet Hardware (N-1 rocket, LK soviet lunar landing module....) to race for the Moon against USA?
Yes, that was the big announcement we made earlier this week. Originally, the game was about managing a utopic space agency named the GSA, but we have expanded that and you'll now be able to play a race to the Moon campaign leading either the Soviet Space Agency or NASA. These two new campaigns will be included in part 1 of the game at no extra charge, along with support for multiplayer using Slitherine's PBEM system.
Cheers,