Crown Crates

"These Crates will contain a randomized selection of useful consumables, and offer a chance to obtain rare and unique cosmetic items or mounts, including some previously-retired mounts, costumes, pets, and limited-time offers that are no longer available in the Crown Store. Crates will have different themes throughout the year, giving you the chance to obtain new, extremely rare items."

- Official description

Crown Crates is an upcoming special Crown Store promotion for set for release on the Crown Store in late November, 2016.