Berkeley has noted its transfer decision date is Friday, April 19.
This is about a week earlier than in the past. If tradition holds, Berkeley is the last UC to announce, although last year Merced kept churning out afterward, likely due to the Count Me In Program which allows competitive students who didn’t get into any of their UC choices, the opportunity to attend Merced.
To cross-check with previous years, click the link below. I will update by UC as I get information.