On opening Steam today, there was presented an "October Round Up" which mentioned a 'new beta'? However, reading the attached page it says the beta is v754b, while my game is v756a after opting in to the beta. Which is true and the latest version?
You would be better asking on the Beta thread - two different posts mention the 75.4b and the 76.5a https://forums.dovetailgames.com/forums/public-beta.191/