Well, there're only a few improvements:
- Some new guns
- Opportunity to command your allies separately. Aliies run and aim faster than normal enemies.
- Opportunity to lie down and avoid enemy fire (Doesn't make you invincible, but bullets miss by a chance of 50%). You can't move while liying
- Only 12 missions, but each mission is a set of 3 maps, 36 maps total.
- Tha campaigns are: Italy invasion during WW2 (British commandos vs. Italian forces), Some kind of future wars (Commandos vs. rebels with lasers, miniguns and etc.) and Winter War 1939 (USSR vs. Finland)

And the biggest question: WHEN? Should be soon, most of work is done, testing the game.