Just to add a bit to this discussion…
I played in some A&A events at GenCon this year. This year, and past years, there was a raffle of items from WotC in support of this game. However, the guy who has run it for this year and many in the past stated that WotC is no longer supporting A&A and as such there won’t be giveaways in future years.
So that tells me that what you all are suspecting is likely true - A&A is shelved for the foreseeable future. And with the exception of the fact that I won’t be able to rake in raffle winnings at Gen Con in future years, I’m not sure that’s a bad thing. I think they’ve made some serious improvements in the game with the most recent editions, there are plenty of variations and ways to play with pretty solid balance and playtest, and to me that means that not much more really needs to be done.