According to Weezer.com: The release date for the new album has been moved up–so you can be swimming to new Weezer songs all summer long.

USA - June 3rd
Canada – June 3rd
Japan – June 4th (subject to change)
Germany – June 6th (subject to change)
Australia – June 7th
International – June 9th
UK – June 9th – Digital only
UK – June 16th – Physical CD album release

Pork And Beans Int’l Single (formats TBA) – June 16th
Pork And Beans UK Single (formats TBA) – June 23rd (to be confirmed)