New features include,
- Full WYSIWYG editing and no more trying to get used to the markup. (Not that it was difficult but people are used to risch editors these days)
Complete redesign of the UI.
Bootstrap makes for an easy to use, clean interface and I really like the design anyway.
Easier to use more finely grained permissions.
Per user permissions for categories and pages and inheritance for pages.
Much better file management and easier to link files into pages.
Bug fixes and support for different databases with faster access.
HTML email templates.
This will make it easier to extend and handle language translations in the future.