We've been working off of trunk as we write the Ruport book, so it means that some of the features from the new 1.2 release have already been covered.
However, there are at least a few places where things are out of date, and probably broken now. If you'd like to help out, have a look at the Ruport 1.2 release notes, download the gem, and start playing with the book content. When you run into problems, let us know.
We'll be working to get everything back up to speed in the next few days, but we appreciate any problem reports between now and then. For now, enjoy 1.2!