Siesta Key Season 3 returns with new episodes this June. Siesta Key Season 4 isn't here yet, but MTV has announced the Siesta Key Season 3B premiere date and details. MTV announced that season three of "Siesta Key," returns for a summer escape with more drama than ever before premiering Tuesday, June 16th at 8pm ET/PT. This season, the crew believes that keeping secrets … [Read more...] about Siesta Key Season 4? MTV Reality Show Returns This June!