Originally posted by us271934:

I'm taking the long route in my gameplay so on Day 980 I've only done the 1st boss. I've seen quite a few The Forest Is Moving events and since the H&H update they seem pretty lackluster. Maybe 1 Shaman and 1 Brute shows up but they seem to observe from afar.
(...)
Edit: I will say the overall numbers of random lesser dwarfs encountered just running around or making noise is somewhat higher than pre-H&H.

Hello, fellow strider! I was at day 750 just exploring and claiming the Meadows and the Black Forest. I wanted to be more confident face to brutes and trolls before triggering further wrath from the Fallen. That means that I never met with the Forest Is Moving event.

Whatever... as compared to others' posts, it looks like the new Forest Is Moving event can only properly trigger over a new territory. Can you confirm this?

And yes, in a new world (and any new territory in an explored world?), I'd say that the strength of normal encounters has doubled (i.e. like two greylings, or 3 greydwarves, when you chop trees down far away from dwarves' bases).