New core vs new expansion

will the switchover be the same day or there will be gap ?

any idea?

I expect we will hear more when they actually announce the new core set. 

Probably a same day switchover, though, if I had to guess. 

Last year Core and Barrens launched on the same day.

While it's certainly possible they'd do something differently, the Core Set is intended to be tied to a Hearthstone Year, and the April Expansion always kicks off a new year, so both ought to drop on the same day.

The rumor I keep hearing is the Core will be released first on April 5th.

They brought my queen back : D

ALL HAIL TESS