https://www.spgpromos.com/selectmemberexclusive19/Looks like some SPG members are being targeted by a "double elite-qualifying credit" promo. Check the link above to see if you're eligible.
Info from the promo is:
You’ll earn double elite-qualifying credit on all your stays between February 15 and May 15, 2017 — with no earning limits. For example, if you have five eligible stays and 10 eligible nights during the promotion, SPG® will credit you 10 stays and 20 nights toward elite status.