Saw this online at Starbucks site...do NOT
think it is ymmv, I am Gold already and wasn't signed in to my acct.
JOIN STARBUCKS REWARDS™ IN DECEMBER, GET GOLD STATUS
This month only, you can get the gift of Starbucks Rewards™ Gold status for a year, just by joining and making a single purchase. Simply pay with your registered Starbucks Card or App* and you'll earn a full year of Gold level benefits, like Rewards and exclusive Bonus Star offers. Already a member? Jump to Gold with a single visit*.
*Offer valid through 12/31/17 at participating Starbucks® stores. Excludes purchases of Starbucks Cards and Starbucks Card reloads.