That didn't take very long now did it? I never even got around to checking it out.
Aren't they afraid that the next product they announce in this fashion will be met with some scepticism from potential early adopters, who might think 'I'll wait for a bit to see if it stays', which in turn will lead to a cycle where it gets harder and harder for google to release new stuff and get it adopted?
edit: would be nice if they open sourced the code.