San Francisco festival Outside Lands returns to Golden Gate Park from August 10-12. The full lineup will be announced on Tuesday (4/3), but meanwhile, the fest is slowly revealing select acts via a series of social media teasers. So far, it looks like they've revealed Portugal. The Man and SOB x RBE. We'll keep you updated as more teasers come in.

UPDATE: This just in: Janet Jackson. That makes two major music festivals that Janet is playing this year, also including NYC's Panorama. She's on the bill for Essence Festival (which she's played in the past) too.

The Eager Beaver and Leisure Beaver presales are sold out, but general on-sale info will also be revealed Tuesday along with the full lineup. You can see the announcement video for the presale, featuring some previous Outside Lands footage, below.