Cryogenic Combat Drop Modules
Two new systems have been added for v6.30. Cryogenic versions of the existing battalion and company sized combat drop modules. The new versions are twice the size of the existing combat drop modules and function in exactly the same way, except that troops loaded into them do not suffer from combat load fatigue.
Combat Drop Module (Cryo) - Battalion: Cost 120 BP, Research 10,000 RP, Size 20 HS (1000 tons).
Combat Drop Module (Cryo) - Company: Cost 30 BP, Research 20,000 RP, Size 4 HS (200 tons).
So for battalion size units you now have the non-military Troop Transport Bay, which is 50 HS, the Combat Drop Module (Cryo) at 20 HS and the normal Combat Drop Module at 10 HS. This should allow some more flexibility in troop transport design, However, you won't be able to mix cryo and normal combat drop modules on the same ship.