It's not just 40k that's getting new Battleforce Boxes next month. Age of Sigmar is as well. If you're looking to start in on a new faction, they're a great place to begin. Head over and check them out.
From the article:
Hurrah! It’s Battleforce day! For those of you who have not had the pleasure before, Battleforces are a bit of an annual tradition here – Yuletide releases that encompass a massive army.
This year there are four Battleforces available for Warhammer Age of Sigmar, and they’re going to be available in December – making them perfect candidates for any Warhammer+ vouchers you’ve been earning this month.