Hi Ricardo
can I suggest you register at Cisco Live ( http://www.ciscolive.com/global/ ) and have a look at the videos and documents they have there. Lots of information.
From the few docs and vids that I have seen, PI 2.2 will have functionality for:
Layer 2 network topology, Enhanced coverage for DataCentre Infrastructure, QoS configuration profiles and more.
hope this gets you started.
cheers
Pierre