There are big improvements to email as well. Users will have a unified inbox, a feature that allows you to see mail from more than one account, and switch rapidly from one to another, a big plus during the work day. You'll also be able to organize message by threads as well.

Apple has added APIs for encryption, a must for many security-conscious businesses and added more support for products from Cisco and Juniper.

San Francisco journalist Bill Snyder writes frequently about business and technology. He welcomes your comments and suggestions. Reach him at bill.snyder@sbcglobal.net.