Probably not. The reason that 3.0 was delayed was two show-stopper bugs (a client crash that happened every time somebody you the aliens, and the infamous PSHB). While they're working on those, there's no telling what other, more minor bugs they will fix on the side.
just go to <a href='http://www.natural-selection.org/bt/login_page.php?return=%2Fbt%2Fmain_page.php' target='_blank'>beta bug site</a> and see what has resolve the bug. They don't want to release the change log if they aren't really sure it will be fixed on the day it release. They don't want to disappoint you if what's on the changelog they have now wasn't fixed on the release and re-edit the changelog after release. Changelog will be display on the day it's ready to download b5.
Comments
Bug fixes
Bug fixes
Bug fixes
and balance changes.