It seems like the current Total War: THREE KINGDOMS is now officially done, with Creative Assembly today putting out a video to explain what they're doing.
Notably, Lulu Zhang the Associate Art Director, confirmed that Creative Assembly is now into pre-production on the next entry for Three Kingdoms. So it seems we're going to see something along the lines of Total War: THREE KINGDOMS 2 perhaps. Something like that anyway, based around a similar setting and theme at least. With a bigger company like CA, they have multiple teams working on multiple games with David Torres, the Designer, confirming they're going to be a standalone unit in the Total War historical section of CA now too.
Check out the update video below:
Additionally, a 1.7.1 patch went out today, although not for the Linux version just yet but that should hopefully appear without too much delay. This is mainly a maintenance patch with quite a number of bug fixes, see the release notes.
Given that game porter / developer Feral Interactive continue to have a great relationship with Creative Assembly, and were responsible for the great Linux port of Total War: THREE KINGDOMS - we can probably expect a Linux port of the next one.