Bohemia Interactive have announced in their latest "SITREP" that the Linux version of Arma 3 will be updated to the latest version of 1.76, work is set to start on it "soon".

Here's what they said:

There was a major update to Arma 3's experimental Mac/Linux ports last week. This brings it to the 1.70 game version, which means it now supports the 64-bit game executables and adds the Jets DLC content along with its platform improvements and additions. The Mac version now also supports Metal. In cooperation with our external partners at Virtual Programming, we plan to start working on updating these experimental ports to the current main branch release (1.76) soon™.

I was really impressed with the latest Arma 3 update for the experimental Linux version. It fixed all the issues I had with it, so it's properly playable for me now.

It's really pleasing to know that the Linux version is going to continue to get updates, it sounds like it might be a quicker turnaround than last time too. One can hope anyway!

What's the deal with it being "experimental" anyway?

Well, it has certain limitations like the limited update cycle. Updates come in slower, as it seems

Bohemia Interactive finish it and release for Windows, then get Virtual Programming to port after the fact.

It's also missing a launcher, there's no RotorLib for the Advanced Flight Model and a few other points. Hopefully these points will get sorted in future. See the status here.

Thanks for the tip Cracker!