In preparation of the Drupal 4.5.0 release, Drupal development has been frozen. However, I'm going to make an exception for the proposed document management and theme system changes. We have been actively working on these, so they get a couple more days. I hope that we can get these sorted by Wednesday, if not, they'll have to wait for Drupal 4.6.0.
During the initial stage of the code freeze, documentation updates, usability improvements and performance improvements will be accepted. New functionality, on the other hand, will not be accepted unless deemed critical. Thus, the current focus is to strengthen the code base's performance, usability and stability. As we progress, focus will shift towards stability and near the end of the code freeze, only bug fixes will be allowed, until no release critical bugs are left.