so far we dont know much about the update only that it will come will graphical improvements(which are not that needed for enlisted but whatever) new supply drop for radio operators and 2 premium squads.
the battle itself was fought from January 1942 to March 1943 so it could both for winter and spring maps but it looks like devs chose the winter part of the conflict.
which gives us bunch of vehicles that fit this timeframe
customization:
axis examples:
soviet examples
coldnt really find much that isnt already in game
maybe this helmet with red star (definetly not a german bias)
vehicles:
SOVIETS
SU-122:
-BR3(no mg,no turret+slower reload)
-122mm cannon
-considering how sherman 105 got only HE it would be fair for it to get HE only but since 105 sherman has turret and defensive mg i would give this vehicle HEAT with 160mm of pen ,with HE only i would consider it being BR2
ZIS-30
-BR2(open top,slow,no armor,the gun makes in BR2 it would be BR1 without it lol)
-57mm high pen cannon with 145mm max pen
Pe-2-110
-BR3
-1mg,1heavymg + backgunner
-4x250kg bombs
IL-2M
-BR 2 or 3
-2mgs,2cannons + defensive gunner
-6x25kg cluster bomb to make it unique
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GERMANY
STUH 42 G
-BR3 (no mg,no turret+slower reload)
-105 mm cannon
-HEAT rounds with either 105mm or 115 mm of penetration (with only HE to BR2)
marder 3
-BR2(open top,not much armor)
-76mm gun with 138 of pen
JU-88A4
-BR3
-1mg+ 3 defensive mgs
-4x250kg bombs
-quite fast
Ju 87 G
-BR2 or 3
-2x3,7mm cannons + backgunner
for those annoying planes theres an idea for more AA emplacements:
SOVIETS:
-37MM autocannon buildable by engis from BR3
GERMANY:
-37MM autocannon buildable by engis from BR3