We shouldnt expect -- and maybe even shouldnt ask for -- the Sherman for a simple reason:
Resource allocation.
This relatively small staff is both keeping the game running, and working on a major addition, in TOD. That huge project needs to be done right, and lots are really excited about its immersion and semi-role playing potnetial. Any resources taken off that project delays the roll out.
It's very reasonable to have new stuff that amount to tweaks, like the g10 turning into the K4 and the P-47 getting its N variant. Significantly, both those projects ahve direct applicability to TOD.
The Sherman doesnt.
Even if non-TOD additions are in store, tehy ought to be relatively simple changes, like adding the [size=4
]Wirbelwind[/size]. Its a tweaked Ostwind, having 4x20mm (already modelled) instead of the 37mm. The T34/85 would be a bbit more work, having a different turret and crew, but even its less work than an entirely new platform like the Sherman.
I expect HTC to devote its resources to finishing the project underway before taking on new ones. The 76mm Sherman will probably get here, but I'd recommend against breath holding in the meantime.