I've already put money on that a Soviet level bomber will be added soon. If not the next update it will be after that. If we look at the pattern of what has been added to the game the past 1-2 years I think it shows HTC is looking to fill the gaps, so to speak. Aside from the B29 and Me410 "vote", most everything else has been a "fill out" a plane set or a "fill in" a gap in the plane set.
The P40's. The Zeke's. The Yak's. The He111. Hurricanes. Ki-43 Oscar. G4M. etc etc.
Currently, the biggest gap in the plane set is a Soviet level bomber and I have a hunch that HTC is putting some resources towards getting one in game. I think the IL-4 (SB2) or Tu-2 would be better (true level bombers), then the Pe-2. The Pe-2 is more of a cross between a B25 and 110C-4, with no level bomb sight (or an unused bomb sight, sources point to both).