IBM seems to have setup public Cognos portal to demonstrate the new features in COGNOS 10.2.2. It can be accessed via the link mentioned below.
http://cognos10.analyticszone.com/ibmcognos
Note: You need to be registered at www.analyticszone.com and your userid/ password combination will work on the above mentioned Cognos portal link.
Also here’s the Youtube playlist to the Cognos Business Intelligence 10.2.2 New Features Playlist.
http://www.youtube.com/playlist?list=PLfj0kQVlOS52KT10EM0H6gkcsjZLvC3Xx