Changelog for update / GOG-1 (Mac) (added 04 January 2017):

- We have added the Mac version of Syberia 2 to everyone's accounts.

Changelog for update / Polish, Japanese GOG-10 (Windows) (added 03 February 2017):

- We have added the Polish & Japanese versions of Syberia 2 for Windows to everyone's accounts.

May I just say thank you very much(!) for the additional languages/ports that GOG adds on an ongoing basis. They are one of the best parts of dealing with GOG for me. These two updates in particular are especially appreciated...I was very much waiting/hoping for both Mac and Japanese versions. Thank you!

Changelog for Update (added 09 November 2017):

- Added the Fargus Russian localization of Syberia 2 for Windows.

This could very well be just a typo, but for me that last update ends with a comma and a space ("Added the Fargus Russian localization of Syberia 2 for Windows, ").
Maybe they had to rush it and there will be a Mac version in the foreseeable future.

It's the same for me too. But I couldn't find anything pointing to more info in the updates thread, so I took the liberty to end the sentence properly.

I figured as much. :) Like I said, it's purely speculation on my part.

Tried to install game today and can't find russian in language list.

The Fargus Russian localization is in the extras list.

Hope this helps, and stay safe.