It's pretty nice, recently entered open beta, so you can just sign up, download client, and then the game, it's very pretty, the beta already has a pretty good selection of planes, and the game supports sticks, trackIR, etc. nicely, as well as having a casual mouse mode that is very easy to use.
The initial grind is a bit tough, and the tier system isn't being used yet because there aren't many players but the starter planes can out-turn anything, so with some skill they can be successful. there's also mission editor, sandbox mode, and the other Il-2 goodies, and I believe one can redeem a cliffs of dover or maybe wings of prey key and gain some cash to spend converting XP to the national tree you like or towards a premium plane, which tend to be lend-leases, captured, or offshoot prototypes.
I've been enjoying it a lot as of late, just wish it'd have more players, especially ones that prefer historical battles over arcade mode, as it tends to lose population at this hour (midnight GMT-ish)