I tried it out in the offline mode. No major problems noted that were not already addresed on the intro page. Love the new, almost photo like graphics except for one thing - you have this beautiful looking scenery, very realistic, then smack in the middle of it a cartoonish looking airfield (same as current version of AH).
First (and only) planes I tried out so far were the Brewster and the I-16. THe Brewster's cockpit seemed very dark, but other than that were very cool to putt-putt around in.
Loking forward to the full release version!