Re. Land Vehicles - In one of the sceenshot updates, there is a great pic of the shortbarrelled 75mm PanzerIV ( probably PzIVD model ) and some captured French thingy behind them ( someone posted on what that was ) - of course, these may just be static, but experience with IL2 is that generally static vehicles were also in the list of moveables.
Although I'm guessing here, I would think it extremely unlikely to have a PzIV and not PzIII as well.
Edit: Here's the thread - the 24/09 update :
http://forum.1cpublishing.eu/showthread.php?t=16627
There's also a picture of what looks like a British Vickers Mk VI light tank ( I don't know what the armoured car is )
Edit2: Rodolphe in post #186 on Page 19 of that thread posted pictures and explanations of all the vehicles in those pics.