There are rumblings that Universal may only open a few of the hotels at first, and bring the others online later, moving reservations for the others. Royal Pacific, Cabana Bay, and Hard Rock only initially, Portofino shortly later, then then others (aventura, Sapphire, Dockside, Bayside) waiting for results from the first (although they would reopen quickly.) Still nothing official, though, yet, but I'd suspect soon. Disney may do something similar with resorts.
However this is friend of a friend type of word, so I don't know how accurate it is. I'm sure Universal will let everyone know soon enough.