New features include:
* Custom Fields
* mod_perl Support
* Shared Saved Searches
* Attachments and Flags on New Bugs
* Custom Resolutions
* Per-Product Permissions
* User Interface Improvements
* XML-RPC Interface
* Skins
* Unchangeable Fields Appear Unchangeable
* All Emails in Templates
* No More Double-Filed Bugs
* Default CC List for Components
* File/Modify Bugs By Email
* Users Who Get All Bug Notifications
* Improved UTF-8 Support
* Automatic Update Notification
* Welcome Page for New Installs
* Other Enhancements and Changes