Well the 16th rumors were correct. Stopped by Target on the way to work and grabbed the new Whirlwind, Double Trouble & Drill Sargent 3-pack.
They hadn't unboxed them yet, so they let me go through them. They had four boxes. 3 boxes were Adventure packs (looks like 2 Empire of Ice packs per box, 2 Pirate and 2 Darklight), and 1 box of character 3-packs. There were 2 of the new character packs.
They didn't get any singles, so no sign of Cynder, but it looks like he'll also be a part of a new triple pack with Lightning Rod and Zook.