Droid users you've got another Froyo build to play with -- FRF84B. (Eyes playing tricks on me. Thanks for the correction darkcomartist.)
Yes, that number should look familiar, as it's the same build that was called the final for the Nexus One . We have no idea if this will be the final version from Motorola, but if you've been unofficially beta testing Android 2.2 on your Droid, you might want to have a look.