We've been working on 3 branches of wyBuild simultaneously (2.6.x branch, the upcoming 2.7 branch, and the 2.8 branch) where we previously only worked on the current branch. There are a lot of big things coming in 2.7 -- that's why the releases have been slower. Also we've been polishing and cleaning up 2.6.15 (increasing stability, speed improvements, etc.).