Something old: Tea.
Seriously. According to this article, tea is taking over as the must-have frou-frou beverage at places like Starbucks, McDonalds, and Dunkin Donuts. While Starbucks has always served tea in various forms (chai latte, straight up, hot, cold, with fruit flavors, herbal, green, and black) apparently there is more interest in tea right now, which will lead to additional options.
Can't wait to see what those are!
And up next? Chocolate drinks.
Not complaining at all.