Will Disneyland, Universal Studios Hollywood, and other theme parks will re-opening soon after Coronavirus?

As the virus is in more control everything will slowly start to the open and return to normal. When that will happens is a guess. 

Uh, first there has to be an after coronavirus. That's kind of more important than theme parks right now.

AFTER (whenever that will be).  Could be a year from now.

They really do want to re-open because they make no money when closed.  And they own commercial land so have taxes to pay.  Outgo with no income?  Bad.

They will certainly reopen.  How soon they will reopen is still up in the air though.  The tentative plan is to reopen in April, but I imagine they'll be playing it by ear.

Probably, but don't count on it ANY time soon.

they are expected to open in april, unless otherwise stated.

They will never open again. The world will never be the same.