The Arcati Mainframe Yearbook 2006

I heartily recommend the Arcati Mainframe Yearbook 2006 - it is in pdf format and free. It runs this year to 124 pages and is a must read for mainframe professionals. Contents include articles on the years trends including of course SOA and Virtualisation. There is a comprehensive list of vendors, top mainframe links and an excellent mainframe glossary as well as the user survey results and hardware tables. Definitely worth a look.

William Hoffman
http://www.mainframe-upgrade.com/