Oooh yeah, baby!
There is an issue (as they say it's still WIP) with ambiance under the clouds, which I have only yet seen a problem with full overcasts, but mostly, it's a wow thing for what I've seen so far.
More impressed than I expected, actually.
Had a quick look to see if I can spot anything not mentioned (such as new ground units, triggers and other stuff in ME), but so far, not seen anything.
Really looking forward to having a flight proper, soon.