Hi, T:ToN launch date is coming fast (28th of February) and that is why i have a question: are there any sure informations about it coming to GoG (and i do not mean: "evert game eventully come to gog")?

Yes, it's coming here. :)

My redeem (manage keys) page on the Tides of Numenera page looks like this:

Key Type:

Steam
GOG.com
Bandcamp
Monte Cook Games Store

Backers who are interested in a DRM-free copy from GOG will be able to exchange their Steam key after final release

So that would be a yes for the game on GOG.

Mine just says "We currently have Backer Edition keys for the following platform(s): Steam." =(

Mine too. Although it does mention trading your Steam Key for a GOG key after release.

From my rewards page on Bard's Tale IV:

"The legacy continues with Torment: Tides of Numenera. Developed by inXile Entertainment, Torment is a deep and thematically rich RPG with a strong focus on narrative, story and characters, and set in the Numenera tabletop setting. Available digitally for Windows, Mac and Linux, with your choice of Steam or GOG.com.

Note: This reward is currently in beta test."

Mine doesn't mention GOG at all, but I suppose if I end up with a Steam key, I'll just have to ask them to exchange it. You can see Torment on your Bard's Tale IV rewards page? Now I'm wondering if my account is janky. =/ I can only manage Bard's Tale from there.

What does it say on the 'keys' page for Bard's Tale IV? Does it give you options to choose the platform for future redemption? Mine states, "We currently have HEX Card: Exiled Bard keys for the following platform(s): HEXTCG."