The 31-ounce Trenta has gotten buzz on Twitter and Facebook, and a Starbucks Gossip reader says a friend just got back from Phoenix, where they were demoing a Trenta iced cup. What's the word on this? A national roll-out coming soon? What are the chances of a Trenta-sized Frappuccino? || Jump to the second page of comments. || UPDATE: This post has now caught the attention of the national press.