Here is the list of the none yet used stuff that devs already done :
Panther Ausf G
Panzer IV Ausf E (the one with the second skin)
King Tiger (various skins variants)
Sherman (various skins variants)
Typ 166 Schwimmwagen
SdKfz 2 Kettenkrad (the one with the camo skin)
Churchill AVRE
Airspeed AS 51 Horsa
LCVP
Bangalore Torpedo
Nebelwerfer 41 (grey skin variant)
88mm (grey skins variant)
Panzerfaust (grey skin variant)