Just released git-annex 3.20120924, which includes beta versions of the assistant and webapp. Read the ?errata, then give it a try!

I've uploaded it to Haskell's cabal, and to Debian unstable, and hope my helpers for other distributions will update them soon. (Although the additional dependencies to build the webapp may take a while on some.) I also hope something can be done to make a prebuilt version available on OSX soonish.

I've decided to license the webapp under the AGPL. This should not impact normal users of it, and git-annex can be built without the webapp as a pure GPL licensed program. This is just insurance to prevent someone turning the webapp into a propritary web-only service, by requiring that anyone who does so provide the source of the webapp.