Starbucks is currently testing a 31-oz iced drinks in Phoenix and Tampa. This is a reaction to McDonald’s 32-oz sweet tea which has been selling quite well. The trenta will be for iced coffee and tea. Unsweetened, these drinks are less than 5 calories. No news yet as to whether they plan on jumbo-sizing their blended drinks.
(This post has been updated. We mistakenly reported that they were trenta-sizing their blended drinks.)