This is the first month for published A+ and B+ lines. Previously, scheds could slide an individual 6 hours on a single day basis, but as Tony mentioned, it didn't show up on the VIPS leveling screen. It's possible that in March, the levelling will show all five categories, A, A+, B, B+, and R24.
Up till now, on the 727, B reserve was for the Cheetoh eaters. In Oct (vacation in Nov and Dec is not typical,) I went to the airport 5 times, and 4 were for standbys. The other was a PM out-n-back.