Recently, Wags stated that the JHMCS is the new priority. He probably means it wont come after the early access as originally planned. This makes sense when you have such a broad FOV on the AIM9X.
With the recent addition of AIM120 (hopefuly the TWS mode soon as well), AIM9X, IFF and the news about JHMCS, it looks like there is an intention to finish the AA capabilities asap.
If this is true, I would be a happy simmer, since I am mostly an AA guy :)