The long-awaited category module has finally been released! You can read all about the project's cool features, and its current status (and download it for CVS/4.7), at this page:
The original category module proposal explains a lot of the concepts and motivations behind this project, as well as a huge number of comments that users have left over the past few months:
Please do not post further comments to this page, but instead post them here or in a new forum topic. The module is still under heavy development, and there is still heaps left to do before it's ready to be called a 'stable release'. But the core functionality is almost all developed, and is already relatively stable and bug-free.
Further updates regarding development progress will be posted as comments on this page, from time to time. Anyone wishing to get involved in helping develop the category module (I know many people have indicated that they want to help over the past few months), please check out the list of todo items on the project page, and contact me if you're interested in working on any of them.
Jeremy Epstein - GreenAsh