So I had bit of pause, about week or so, in playing GD. When checked new updates there is 1.1.2.0 to 1.1.2.2 patch but there isn't 1.1.2.0 patch itself. Last patch I have is 1.1.1.2 hotfix 3. I'm doing something wrong, or GOG forgot about this patch in manual DL?

You're right. There is no manual patch from 1.1.1.2 to 1.1.2.0. Someone at gog forgot about it :/

Hello,

the latest version of 1.1.1.2 was 1.1.1.2_hotfix_4_(28836).

I made a Ticket because of the missing patch two days ago and the send me a Dropbox-Link for it today.
So here is it, but i don't know how long this file will be there available.

patch_grim_dawn_1.1.1.2_Hotfix_4_(28836)_to_1.1.2.0_(29341)

Yep, patch is here. I guess they really forgot about it previously.