My guess is in March. The new dlc should be released around 11 or 18 of February, or even a week after that. A new crates season usually comes 2-3 weeks after new dlc. Xanmeer crates were out on December 6th, so if you take roughly 3 months per season, beginning of March we should see a new Scaledragon season of crates.
I would take advantage of Storm atronach Crates if I were you