Was on AHII last night for a bit, it is getting VERY close to being ready.
One of the things they fixed is the FW190 fuel tank burn order. In AHII if you load 50% fuel in a 190 it fills the forward tank to 100% and the Aft tank to about 1/8th. Yaay!
Also, cannons of all types seem to be more lethal. The ballistics of the MG151/20 is about the same as it is now (which IMO is about right) but when you do get a hit in AHII it does DAMGAGE. I took out two B-17's in one poorly aimed pass in a 190A5 with only one set of 20mm's.
Frame rate is also much better, on the default settings for me it is not a huge amount worse than AHI. Each update has made improvements in FR. Pyro was on and said HT had made some big gains in FR that will be in the next update.
Just thought I'd give an update for the folks not watching the progress in the AHII forum.