From Google Blogoscoped Forum:

Maybe NOW they will have time to work on Google Freedom? That of course would be the smart browser add-on which would try many, many methods to route search and web traffic for sites and words banned in China. It would update itself frequently to add new methods as the dictators discover and block existing methods. Google would determine all sites which are blocked in any way (including those Google censors) and create temporary mirrors of the content, encrypt the content, and transfer the content. Thus, search for “human rights in China”, and the famously banned hric.org would be mirrored to a randomly-created IP address, and delivered in encrypted form to the end user in China or elsewhere.

A team of Google engineers would invest at least 10% of gross revenue from Google.cn operations into this research and development.