The official list:
Key Changes
In addition to many small bug fixes, this release includes:
Accounts flagged as spammers are now more visibly different on the member list in AdminCP
Added quite a few new embed providers
codepen.io
coub.com
deviantart.com
docs.com
funnyordie.com
gettyimages.com
iFixit.com
kickstarter.com
meetup.com
mixcloud.com
mix.office.com
on.aol.com
reddit.com
reverbnation.com
screencast.com
screenr.com
slideshare.net
smugmug.com
ustream.tv
Google Maps (requires free Google API key)
Default location for an AdminCP tab honors the admin's ordering
Staff notification emails for tickets in Commerce now include the ticket ID
Auto-saved content in the editor will now expire after 48 hours
If you load an editor that has previous auto-saved content you will now be prompted to keep or remove it
You can now set pre-filled reasons for Warning actions that will automatically populate the member notes editor when a moderator warns a user
Escape key will now cancel quick-edit on titles
Adds a setting to restrict member birthday view to admins only or to completely disable prompting for birthday to member
There are now more "save and reload" options in various places to keep your place when editing content or settings
New check all box when viewing activity on a member profile for easier moderation
You can now hide posts that are unapproved rather than just approve or delete
When a moderator changes the status of a report in the ModCP the system now puts a reply in moderator comments noting the change
When you see a "could not write file" error the file it was trying to write now shows in the error logs
You can now quickly edit tags when viewing an item without having to edit it if you have permission
If you are using multiple devices to login to a site you will be less likely to be logged out
Tags can now be quickly edited when viewing an item
Administrators can now create custom RSS feeds for various content
Enhancements to IP discovery tools for moderators
Actions for reports in ModCP now show when status is changed as a comment
Redesigned support tool
More REST API methods
Password strength rating and requirement option
Guest terms of service alert
Minimum age requirement
Ban Filters are now Word Filters and can set words to automatically moderate
Display name history is now available on profile view
Better analytics integration
Leaderboard