New Features and Major Changes

Core Features

• Core Features can now be enabled/disabled from a common page.
• Advanced profile
• Post moderation
• Moderation logs
• Paid Subscriptions
• Warning System
• Search Engine Tracking

Theme Management

• You can now edit every template file on any theme including the defaul. (SMF 1.1 only allowed you to edit non-default themes files)
• change forum width from the admin panel

Permission System Changes

• Permission system is now based on profiles.

Personal Messages

• Rules can be created to automatically sort incoming personal messages
• Display Personal messages all at once, one at a time and as a conversation

Package manager

• Package manager tries to apply changes to non-default themes too.
• Emulate version for mod install/uninstall.
• Install packages from a URL

Administrative/Server management

• Scheduled tasks
• Mail queue
• Load balancing
• Multiple attachments folders
• Languages installer
• Edit meta description from admin panel
• A default php-based caching
• Ability to turn on/off signatures in admin panel

Registration and Anti spam

• OpenID
• Verification questions
• Password strength

Members and topics management

• Reattribute User Posts
• Remove Inactive Members
• (maintenance) move all topics from a board to another
• Three more group types: Protected, Requestable and Free
• Moderation center
• Birthday emails
• WYSIWYG editor
• Consolidation and improvement of Buddy and Ignore lists (and related notification settings)

The New Default Theme "Curve"

Packaged since RC3 of the 2.0 series, is a new default theme called Curve. The original default theme, called Core, is still included with SMF 2.0.

Code related changes

• support for PostgreSQL and SQLite
• Integration Hooks
• Better separation of theme and code (e.g. menu "definition" is now in Source.php so that is no more necessary to change each theme one by one to add or remove a menu entry)
• $smcFunc
• See also: Mod authors: Changes in SMF 2.0

Unsorted

• Scheduled tasks
• OpenID
• Mail queue
• Languages installer
• Verification questions
• A default caching
• Load balancing
• ability to turn on/off signatures in admin panel
• moderation center
• birthday emails
• additional attachments folders
• edit meta description from admin panel
• password strength
• change forum width from the admin panel
• WYSIWYG editor
• install packages from a URL
• three more group types: Protected, Requestable and Free
• Reattribute User Posts
• Remove Inactive Members
• (maintenance) move all topics from a board to another
• Buddy/Ignore lists (and related notification settings)
• Personal messages rules
• Display Personal messages all at once, one at a time and as a conversation