Hector Luna said: >has anyone heard what they might be? i'm not just talking about being >able to load the OS, but also being relatively useful once loaded. No one knows for sure. If you have a look at: http://www.apple.com/macosx/ ...you will know everything that all of the rest of us know about Tiger. There may be folks on this list who are Tiger beta testers, but 1) they are under non-disclosure, and 2) Tiger is in beta, which means that the specifications haven't been finalized yet, necessarily, so you can't even go by the beta. Randy B. Singer Co-Author of: The Macintosh Bible (4th, 5th and 6th editions) Routine OS X Maintenance and Generic Troubleshooting http://www.macattorney.com/ts.html