I don't seem to understand: is V3.0 a new interface, ie layout changes only, or will MB as such receive changes? Thank you!
The main change for now is that for MB v3, the graphic user interface has been completely redesigned internally. This should make it a little bit easier for Steven to be able to continue developping MusicBee.
During this dynamic process, also other changes have been made, many new and older requests have been implemented, and squashing bugs is also continuing with relentless effort.
So it is a transitional process, with lots of things going on at the same time.
To sum it up, the priority now is probably to get the new engine running reliable and smoothly, and kill all bugs that roar their heads during this process.
When that has been accomplished to a satisfactory degree, there will probably be a shift where the focus can be more on new features and new requests.