A few months back, I started a low profile project to create a set of Vim runtime files for various Git filetypes that would ultimately be included with Vim. Given the warm reception they have received, an official announcement seems prudent. Five different filetypes are provided: gitcommit, gitconfig, gitrebase, gitsendemail, and git (which is a generic filetype for things like git log output).

There's no formalized install procedure but the following shell commands should suffice:

mkdir -p ~/.vim
git archive --remote=git://git.tpope.net/vim-git.git HEAD|tar xf - -C ~/.vim

The files tagged with v1.0 are already slated to be included with the next Vim release, and those tagged v2.0 have just recently been submitted for inclusion.