Originally posted by Grandpa:

Valheim is a indie masterpiece and im already looking forward for the next big expansion in content. Will we be getting a new biome(s)/weapons/items the next month or this summer? This game is just so fun playing with friends or even solo when you have time.

A dev said weeks ago that after they release a specific content update to the game(for example last was ice caves) that they tend to take 6-9 months with their 10 man team.

So you can guestimate from that point you've got about 6 more months or more until Mistlands will drop barring any issues.

Best advice: stop fretting over when it drops, play valheim as is, with mods or something else, and when new content comes, enjoy then. It'll happen when it happens so ground your expectations accordingly.