I'm on beta and have not received an update since the last stable release. I'm not sure if I am just not getting the update message or if there are really no builds, but my conversation with bigfeh here made me question what is really going on.
My guess is that updates to the beta build are on hold since there are several big changes upcoming from the cuttingedge build, and they still require bug fixing and other work.
Cutting Edge is multiple times a day, Beta is (usually) weekly, Stable is monthly. Beta has deviated a bit from this schedule lately due to the OpenGL stuff going on in Cutting Edge such that Beta and Stable are currently the same version. Just wait until Cutting Edge is fully tested and then we'll get things rolling quickly once more.