And the Neightbor From Hell collection is also on Steam. I smell a rat....

They are merely considering the latter (see the attached image).

By the way, they strongly dislike people requesting specific details about the 10 free new buildings:
https://www.facebook.com/ConstructorHD/photos/a.568313189995920.1073741828.482497141910859/716200461873858

Indeed it would, but there's no mention of a GOG release:
'The formats the game will be released on will be PS4, Xbox One and Steam(PC).'

GOG tends to be "forgotten" in such anouncements... :)

If they did not plan to release it here, why did they bring back the old version a few weeks/months ago?

Chances are good for it comming here, maybe a few weeks after Steam ("to avoid pirate copies..."), but they would be stupid not to do so. Remaster of old game, many old fans here. This is no game for the COD Generation, they need all buyers they can get.

I'm not very familiar with Steam. This appears to download but not be added to the library. Hm.
At least it seems to run without the client, so there's that.

THey said that was a mistake and they'll fix it soonish(tm)

"Last time everyone wanted it on Steam"

Woah, what a load of bullshit.
"Oh look, our main page has 29.306 likes. Perhaps this has something to do with the free g0g version we mentioned in that post? Nah, this is impossible. It's simply not possible. I'm sure it's just a coincidence that we have nearly 30k. Hey, did you sent the game files to Gabe already? We have to get it on Steam ASAP okay?"

Interesting that they didn't (publicly at least) ask for any favor, to put it on Steam. Did they?

Good thing I already have what I want from them, which is classic Constructor.
I'm not gonna give my support for their lack of respect with smaller stores and customers that don't use Steam.

I know but this is more a case of being oddly specific than forgetting to include something.

That's a good question. It could be that System 3 have had a serious change of plans regarding the overall nature of the release (they seem to be flirting with the idea of continually creating additional content) and that those plans don't mesh well with GOG's company policy.

Not that I'm aware of. It's funny how they've changed their minds about the requirements.

They seem to think "everyone who likes us/follows us on facebook will buy our game". Quite delusional...

There will be a very bad awakening for them once the game is released I think...

System 3 added Denuvo to Constructor:
https://www.facebook.com/ConstructorHD/posts/784274505066453
&
https://steamcommunity.com/groups/DenuvoGames

This can't be real.
How much does Denuvo cost? 50k?
They won't sell it often enough for such expenses with the mixed reviews it has and the revenue lost by people staying away from it because of Denuvo on top of that.

Stupid decision.