It's free, download it and play FRB.
It's a completely different game that Aces High... it is indeed a beta... and you aren't going to get a valid review from an Aces High fanboy.
That being said, while their MAY be 3 million accounts, the VAST majority of these play Arcade which is absolute horse balls. The next major slice plays "Historical" (B/S) Battles, which are basically horse balls that have been washed... then the RAZOR thin less than a tenth of a percent that are left play FRB.
FRB is really, really fun... it reminds me of FSO, where it gets white knuckle fast, and you're coming down off an adrenaline high for the next 15-20 minutes.
That being said, it's not at all a replacement for Aces High... and there is no way that they could make it a replacement for Aces High any time soon...
You are missing:
1. One Big Arena
2. A tight knit community - you get the mouthpieces on the forums, and the jerkbags, but you don't get the same we-all-on-the-same-retard-bus-family that you have here, and you never will
3. The Integrity that HTC has maintained to an extremely high degree for over a decade... I LIKE seeing prototypes modeled, part of me loves that these planes are flyable somewhere... but it is no Aces High and it will never be.
If you are sneering at it because of the fanboy hate and outright misleading statements of a few here, go try it for yourself. Once you get your johnson knocked in the dirt a few times in FRB, come share your thoughts. Because you can piss on arcade all you want, very few AH pilots are going to roll right into FRB and do anything at all without icons/map locations/clouds you can duck into/etc.
It's a nice diversion for a flight or two every now and then, but it'll never be Aces High.