From the preview:
We like to introduce you to the Cargo Mule, a semi-autonomous mechanical beast of burden. No longer do you need to tie up valuable fighting forces, hauling supplies, ammunition and light support weapons from one end of a battlefield to the other. The (HHM) Hammer Head Mule is capable of following simple commands such as, follow, return to depot and move to that objective. The other option is to utilize the (CCM) Central Command Mule, controlled by your command detachment via a coms link routed back to the Communications Officer. This allows your command squad to control the Mule’s mission, freeing your troopers for the fight.