General and security

• Handling of attachments (based on mod Improved Attachment Error Handling)
• Tokens (security)
• End of admin and moderator sessions (security)
• IPv6 support
• Smart-emulation (the package manager is now able to propose a SMF version to emulate in order to install a mod)
• New tags for packages: <credits> (tag for inserting mod credits in to the credits page), <requires> (tag to basic mod dependency), <hooks> (tag to add / remove hooks)
• Detection of mobile devices
• Previews of several things are now available (Personal messages (now AJAX), news and newsletters, warning template and warnings, signature)
• jQuery
• phpinfo directly into the admin panel
• Deny access to boards
• Ability to specify how long to keep moved topic notices before they're deleted (via scheduled task)

Hooks

• Many more hooks (will follow a list of the most important)

Minor improvements

• Added categories for boards to membergroups management pages (easier to use)
• Post recount for members added to maintenance menu
• Improved calendar export function