Steam know if the game is coming or not, how could they not know.

On the DLC subject, I will buy under certain conditions.

1) The main game is fixed correctly and fully well before any paid for DLC appears

2) The DLC has content that is value for money and has a decent amount of content

3) They go nowhere near no-pay no-play, it divides the community. Arma 2 lite patch option must be used if they choose this route

4) They go nowhere near the DLC individual plane route, I dissagree with this model as i believe it is profiteering