SZA Joining Kendrick Lamar For Super Bowl Halftime Show

kendrick lamar sza hafltime show x applemusic X / @applemusic

Kendrick Lamar's highly anticipated Super Bowl halftime show just got even more exciting ... 'cause SZA is joining in on the party!

Apple Music -- which sponsors the gig -- dropped the news out of nowhere on Thursday, announcing the 4x Grammy Award winner would be joining K. Dot in NOLA on February 9.

The platform also shared a new teaser for the show, featuring Kendrick on the phone discussing the possibility of adding someone to his set list ... when SZA creeps up behind him and dumps a jug full of blue liquid all over the "Not Like Us" MC.

The partnership makes sense ... not only are they both Top Dawg artists, they also have…