will Shattered Embrace ever come to GOG?

considering the reviews it got - why would you want it here?

I would also like to know when it will finally be available on GOG. It's been almost a year since it was released on Steam.

TopWare Interactive has definitely not abandoned GOG (they released KnightShift and The I Of The Dragon here this year), so there must be another reason why this DLC is still not here. Maybe because GOG users want to have a complete edition of Two Worlds II, including all DLCs, and don't want to see another game with the missing content in the GOG catalog / their libraries?

All other DLCs for Two Worlds II (with similar average reviews, btw) are already available on GOG:
https://www.gog.com/game/two_worlds_ii_call_of_the_tenebrae_dlc
https://www.gog.com/game/two_worlds_ii_echoes_of_the_dark_past
https://www.gog.com/game/two_worlds_ii_echoes_of_the_dark_past_2

Why do GOG users have to go somewhere else (Steam) to complete their Two Worlds collection?

I NEVER pay any attention to reviews! I've seen it played by another gamer and she allowed me to take the controls for awhile and I need it to complete my Two Worlds series. And by the way, anyone on steam always complain about numerous games not running correctly. There's a couple of reasons for that: it's a steam game and it cannot be expected to function very well on a half-donkey machine.