Yes it does, but my gut feeling is it's just the large square metal box they showed at the meet & greet with improvements. Believe me, if you saw it, it's not anywhere near a water heater that can be sold.
WDRP alluded to that in the very next sentence after stating they have a water heater.
According to the company, the unit, better known as the multi-cavity microwave heating unit (MCMHU), is Wanderport's immensely improved second generation test unit believed to be the "first of its kind" worldwide.