When ever I speak with them about the 8.1 update for the mate 10 pro all i get is they are working on it and check their facebook page for updates.
Just so you aware my mate 10 pro with android 8 has some bluetooth issues. Which hopefully 8.1 addresses. I know doesn't answer your question but having the latest doesnt always make it the best.
I have unlocked P10 plus UK & got 8.0 a few months ago. First time it has updated outside of me pushing via firmware finder. I regret the update due to the crap changes with notifications!