Linux version is 64 bit, yes. We've uploaded a 32 bit windows binary today, will need a bit of testing to release it.

Sadly there is no way to include the translation in the new build. We would have loved to include mod support, but unfortunately it wasn't possible with the Unity engine we chose to use (we chose it to be able to support multiple platforms, like linux & Mac). Many of the required tools are completely based in the developer's machine, and for example lightmapping (shadows and lights) would not have been possible in the mods. Targus' mod actually had to change many of the hard coded texts inside the game by completely rewriting the game executable, so those would not of course have been possible to keep.

But luckily by using the vanilla version of Driftmoon (for PC only), the translation and the other mods are still available. This is the main reason we were very happy GOG agreed to include also the vanilla version as an added bonus.

But we'll keep translation support in mind for our next game. It's a costly business, a single language translation for a text heavy game might cost more than the whole game will make. But it's a possibility if we ever make a game with only the interface to translate.

I have! :)
It's just a few bugfixes. Some sliding doors could sometimes get stuck, and one user reported Blotch not wanting to open the village entrance.