I guess I'll jump the gun and make the official announcement:
https://www.spgpromos.com/exploremore/
SPG Explore More
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1,000 bonus Starpoints® per stay at St. Regis®, The Luxury Collection®, W®, Le Méridien®, Westin®, Sheraton®, Tribute Portfolio™ and Design Hotels™
500 bonus Starpoints per stay at Aloft®, ElementSM and Four Points®
10,000 bonus Starpoints when you stay 25 or more nights