I'd imagine part of the reason this was released was for the same reason a stripped down version of their web server was released-- to allow other internal Goog

I'd imagine part of the reason this was released was for the same reason a stripped down version of their web server was released-- to allow other internal Google projects to be released as open source without much modification. Not as much "new stuff" there as opposed to guice, GWT and google-collections. Their concurrency utilities, on the other hand are interesting.