The front of the server manuals carries a summary of what's new in each release. Additionally, IBM maintains a tradition of creating a redbook for each new release, with an exposition on new features: look at http://www.redbooks.ibm.com/abstracts/sg247718.html. And you can search for specific details in IBM Technotes about TSM 6.1, as well as review past customer postings on issues in the ADSM-L archives.
Note that the search function remains defective in the ill-conceived generalized Support pages which arbitrarily replaced the once-great TSM Support Page which IBM took away from customers. (I had to press the Web development department to acknowledge that the search function was badly engineered, where Defect 1247 has been open since February 9th on resolving the problems therein.) Richard Sims
