I want exploration, I wonder if it's as big as Dying Light's the Following map. I'll be disappointed if it's not, will it have a big town too, the Mountain, heavy forest and lakes as the real Bar Harbor?

If you look at Bar Harbor on google maps and compare it to the Boston area, it's about 1/3rd of the size of what Fallout 4 takes for the Commonwealth. That's a lot. If I can find the screenshot I posted I'll edit it in this post.

I doubt it will be as big as Dying Light. Games like Far Cry 3/4 and Dying Light have vehicle transport which almost determines the size of the map. Beth games. by contrast, are walking games which result in a smaller map but more detailed locations on the map.

I would love to be proved wrong by Beth of course.

With $25 price tag... id actually expect at least 40% of main game content...

Then you'll be disappointed. It's not going to be 40% of the base game's content.

The fact that you would even expect that is insane.

well, Dying Light's $25 addon is twice the size of the main map

And much less of other things I assume, comparing Dying Light and Fallout 4 is like comparing a pickup truck and a VW Beetle just because both are cars.