I have just received my Steam key, and was able to activate successfully, however it seems like the Linux version of the game is not available on Steam. Any idea when that will happen?
Correct, the Linux version is currently not available on Steam. This is due to a number of unforeseen circumstances related to the 1.4 update.
We hope these issues will be resolved in short order and that it will be available soon.
A bit disappointed the Steam version is not up as I just bought the game after playing the demo a bit. Installed the 64 bit but I’ll probably not invest much time in it and wait for the Steam version as I’m guessing unlocking achievements is part of the fun when it comes to games like this one 
There are still achievements to unlock in the game. Just not Steam achievements. Also, when you do get the Steam edition, you’ll have to unlock those achievements all over again, doubling the fun.
I noticed there are achievements. Anyway, I never ever consider having to unlock achievements again doubling the fun, more like “tedious work”, as I usually don’t enjoy playing most games. Legend of Grimrock kinda ruined it for me regarding achievements and steam already. Time is limited and as a fellow game developer I need to research into various stuff…
As someone who uses both Linux and Windows, I wonder if the cloud-save functionality will work cross-platform.
@DreadKnight - How and why did the Legend of Grimrock achievements make you feel that way? Just asking out of curiosity as these things are good to know so they can be avoided 
@Deskairn - The Steam cloud save function is confirmed as working X-Platform.
Hey, not sure for how long it’s been there, but I just notice the Linux version is available. I have installed and it’s working great! Thank you!
PS: if you want to copy your old saved games from standalone version to Steam version, copy all files from ~/.config/Game Dev Tycoon/Local Storage/ into ~/.config/Game Dev Tycoon - Steam/Local Storage/