Some time in September, apparently. Or so they said in March. https://nitter.net/GOGcom/status/1631655986124431366

Via https://www.gog.com/forum/atlas_fallen/release_date/post2

I first read your title as "Will Lies of PR come here?"...

Lies of P does look awesome. With Lies of P, Forza Motorsport, The Lamplighters League and Persona 5 Tactica all coming out in close proximity to each other...I need to delay Starfield until the end of the year to give it the full 1- 2 months it will need.

They've been here a LONG time.

I'd love to see Atlas Fallen and Lies of P come here - but like most games, I expect them to be put on other services ASAP and then GOG later.

Why? Steam, Epic, and other services allow them to use DRM and also update the game whenever they feel like it without curation from those services; avoid dealing with possible piracy problems; and avoid any slow-down of patches by GOG's curation process.

So, yeah - if it comes to GOG, it'll probably hit GOG when the game's done w/ expansions, DLC's, patches, updates, etc - and then they'll re-work it for Galaxy...or not. It'll hopefully get re-release in Full Complete Form on GOG and put out in one big swoop all at once...so they can be done with it.

And so they can guys like me that often buy a game on Steam when it's cheap just to play it & get to work on it...and then re-buy the damn game on GOG without DRM just to get my double-dipping self on the re-sale of it elsewhere.

Ooh you poor snobs, i feel so rich with my backlog that i'm able to pass entirely for this supposedly fantastic year in gaming.

Mecha core 6 ... Hah

Immortals of Aveum.... guess i'm not that adult

Ballie 3 ....... mwa .. i still have some stuff to do in 1

Cities 2 though.... i bet ya i'll be buying that one on GoG.... at least there i will be safe from people ridiculing paradox buyers