I agree there is another forum, but I want to hear input from people familiar with the IL-2 series.
If you played il2 1946 you will feel like at home flying War Thunder FM and DM wise (the fm and dm is constantly getting better with every patch). I used to play il2 1946 fanaticaly for like 5 years in the HL dogfight servers and in the online wars, and i'm very happy with War Thunder.
There will be a mode called 'World War' which is a big secret among Gaijin and is supposed to blow out of the sky every other sim competition currently because it will allow people to fly planes, ships and tanks all at once on a massive territory with many people on dynamic battlefield but not much info is available on it right now.
If you played on Hyperlobby on dogfight servers you will feel like at home also, because there is an option for instant combat that feels like the dogfight servers from HL.
There is co-op up to 20 people for those who like to fly together.(which involves a dynamic map, something like the gennadich server from il2).
The game is beautiful, it has the best graphics in any sim to date, and is very well coded. On my 5 year old PC i run it with 40 fps on medium settings and it still looks better than anything i played.
And that is only small portion of what you can experience in War Thunder.
All in all this sim (if you call il2 1946 a sim, then this is also a sim) is going to be a massive success, it already is as fun as il2 1946 and most of all don't forget that currently it's only a closed beta
. I can't imagine how good will be the final product.
(all this info is available on the main site btw