[boost] [releases] How long between beta and final release?

Although there has been general agreement that there should be more time between beta and final releases, we haven't nailed down the exact duration. To get discussion started, I'll propose five weeks as the target time between beta and final release. Since there needs to be a week for final regression tests to cycle and release candidates to be tested, that would allow four weeks for beta fixes to be incorporated. Comments? --Beman