Is what you're referring to something like Growl that pops up and says 'Hey, metrics.sessions.active just dropped by 70%", or something pre-configured to spin up additional VMs/instances/dynos when some metrics misbehave?
TL;DR: How autonomous is it?
It'll be released in a week or two. In the meantime, I've been speaking about it: http://devslovebacon.com/conferences/bacon-2013/talks/bring-...