it launched in October of last year and forgot all about it. The new satellite images are pretty recent - as there's a new house being constructed on our block and the image has the roof shingles installed and the driveway in; which are both pretty recent events (within the last month or so).
The Follow Your World tool is a neat little app that gives you a heads up when Google updates their imagery of your house. We're still not on StreetView (our block) so I'm hoping that one day soon, a note like the one above will arrive that will include the details of how our house is now included in the StreetView collection.
If you haven't signed up for a Follow Your World update, you should do so here.