We've just finished a tuneup release of Tinderbox 4.5, addressing a few rough edges. Nothing earthshaking, but it's recommended for everyone.
There's also a lot of interesting discussion over on the Tinderbox Forum. One of the weaknesses of threaded discussions is very much on view there, too: it seems that one thread wanders off-topic into talking about the terrific new in-place editing in outlines, while an adjacent thread wanders off-topic into worries that the in-place editing actually interferes with things people want to do. (Fortunately, there's a preference setting: everyone can be happy!) It's a good lesson to keep in mind, though: the consensus on a threaded discussion is not necessarily a consensus at all. (This partly explains why VersionTracker and MacUpdate are so often so wrong.)