Well, regardless of whether or not whatever Japanese plane you guys are talking about had decent armament or not, I have 3 personal candidates for the next airplane introduction to Aces High.
The first:
B-17 F or E-- I can't tell from here, but I'm thinking F

Valuable addition to MW and snapshots, and a bit of variety when it comes to the American heavy lineup.

Because we really do need that xD
The second: He-111

Another good MW addition, and it would be the first true German bomber to be introduced to AH.
The third: Now I've forgotten, but I would definitely say that the Pe-8 would/could possible deserve a spot in the AH lineup. I realize it would be difficult to model the interior, as I don't think there are any remaining airframes in the world
As for updates, I would REALLY like to see either the Lancaster remodeled, or the Hurricane collection, sort of like what they did with the two P-40 models that they already had-- they released both at the same time, because their interiors were quite similar. I think that it would be the same with the Hurris, no?
Just my 0.02$ but don't flame me, please. These are just my thoughts.