I have an iPhone 5s. If I updated it to 7.1 b2 and jailbroke it, when mobile substrate and the cydia tweaks are updated, will I still be able to use them on 7.1 even though the devs are probably just updating them for 7.0.4?
I was wondering the same thing earlier today, i highly doubt there would be substantial enough differences in 7.0.4 and 7.1b2 that would break tweaks. Devs would mainly need to update going up 1 version in iOS (5->6, 6->7) I wouldn't worry about it at all