With the release of the cover to Secret Avengers #4, there's been some question about what happens to Richard Rider.
I still have a feeling that the Nova we see in the beginning of this first arc might not be Rich. He may be Malik Tarcel posing as Nova for some reason. He has the uniform. Plus the solicits for SA #2 says someone betrays the team and #4 says the true enemy will be revealed.
The cover could easily be interpreted as Steve taking the helmet off of Tarcel to see it isn't Rich. And then he might even use the helmet to contact Rich. Otherwise, how is Rich even going to be aware of the Secret Avengers, let alone join the effort?