This page tells you about the current development of vim. The Vim FAQ needs a rewrite. I am looking into DocBook for this.
Help is welcome.
The developers are adding new features and fixing bugs constantly. They are communicating and coordinating their efforts via the vim-dev mailing list . Many people already have suggested some very good idea for Vim which are assembled on the Vim WishList . Please take a look at it, so you'll know whether your favourite missing feature has already been discussed. New features also need some testing, and all help on this is much appreciated.