Lootcrate announced it's theme in it's teaser for the December 2015 crates. The Theme is "GALAXY".

From Lootcrate: "What we’ve found is a little bit of science and a lot of fiction, with a few space battles here and there to keep things interesting. With EXCLUSIVE items from Star Wars Episode VII: The Force Awakens and Halo 5: Guardians, this is the loot you’re looking for, chief!"

So we know three properties so far:

- Star Wars Episode VII: The Force Awakens

- Halo 5: Guardians

- Galaxy Quest

We also know there will be a T-shirt and a Funko Pop.

PurdyCool.com