Short interview with the developers. Looks like the game will go up for pre-order in July and release around November.

RoN is shaping up to be the most complete and compelling tactical shooter project over the past decade. Previous dev blog.

I'm looking forward to seeing this come out. If this game ends up being very tactical, to me this looks like where the Rainbow Six series could have/should have ended up.

Great news.
Looking forward to November but as a war-torn flightsimmer I will not touch any pre-order arrangements of any kind.
Actually, their repetitive comments on pre-order sales makes me a little concerned rather.