@GameWatcher Thronebreaker will be GOG exclusive. Additionally IGN went hands-on with Thronebreaker.
More information.
[...]Up until now, we've kind of expected for Thronebreaker: The Witcher Tales to follow the usual CD Projekt RED release schedule, where the game would simultaneously come out on every major video game marketplace, or that perhaps they'd stagger the game's release on other services a bit.
This has now been proven wrong, however, with the launch of Thronebreaker: The Witcher Tales' pre-order website, which very obviously points out that the game will be an exclusive GoG release.
Thanks Couchpotato!
We take an early look at Thronebreaker: The Witcher Tales with its lead writer.
More information.