This new release is actually part of a series of Panzer games from Matrix, and indeed, owners of the previous title: Panzer Command: Karkov get this game free.
It features 10 preset historical campaigns, 14 randomly generated historical campaigns, over 60 preset historical scenarios, and an infinite number of randomly generated battles. If that's not enough there's also a map maker tool.
You'll get to cruise around in over 50 tanks, and Matrix promises a host of other small improvements to the manual, visual engine, AI and play-by-email multiplayer.
Enjoy the screens!