As some of your have been asking what has changed i have found a list of some of the changes since the upgrade.

Quote Originally Posted by Floris
  • Hooks and Plugins
  • Inline Moderation
  • AJAX Integration
  • Data APIs (Data Managers)
  • Template History and Comparison
  • Database-Based Thread and Forum Read Marking
  • MySQL Full Text Search
  • Additional Datastore Storage Methods
  • SMTP Mail Wrapper
  • MySQLi Wrapper
  • PHPDoc'd Source Code
  • Moderator log entries now support language abstraction. This will only apply to log entries made after the upgrade. Past entries will remain in the language of the moderator who generated them.
  • There is now an option to use a image check for guests using the Contact Us form.
  • There is now an option to enable / disable Forum Leaders as well as an option to enable Forum Leaders but not display moderators.
  • Webkit support for the color swatch in the Style Manager.
  • ImageMagick 6 support. This is experimental and relies on you to have ImageMagick properly installed. Image Verification requires ImageMagick to have been compiled with Freetype support and possibly have Ghostscript installed as well (under Unix).
  • Option for user to specify their own event start / end times.
  • Custom avatars and Profile pictures will be automatically resized to the maximim allowed image sizes (when possible). If you are using ImageMagick then they can also be automatically converted from .BMP, .PSD, .TIFF, and .PDF
  • Stats can now be ordered by results in addition to date. Also added an option to not display days/weeks/months with no results.
  • Profile Pictures can now be saved in the file system. If you currently have Custom Avatars stored in the file system, you need to move them back to the Database and then move them back out to the file system. If you don't do this, your users will need to reupload their profile pictures.
  • Each image attachment type can be set to generate thumbnails instead of All Images or None.
  • Each attachment type has an "Open in New Window" option now.
  • The NOSHUTDOWNFUNC switch has been moved to a setting in the vBulletin Options. If you've been told by support to enable this in the past (pm's don't mark as read), you will now set this to NO in the Server Settings and Optimizations section of the Admin CP.
  • Moderated posts and threads will no longer increase the poster's post count until the item is approved. Likewise, sending a thread or post back to moderation will decrease the poster's post count. When this is a thread, it will decrease the post count of all posters in the thread.
  • Language Chooser
  • [attach] BB code that allows you to reference an attachment directly in a post. Usage: [ attach ]attachmentid[ /attach ] or use the attachment drop down in the WYSIWYG and Enhanced editors to insert your attachments.
  • [noparse] BB code that allows you to disable BB code parsing in a specific section of a post.
  • Word wrap no longer applies to text in code/php/html tags.
  • BB code parser automatically fixes bad tag nesting
  • Fixed the issue of posts by users in Coventry showing up to everyone in the thread/forum last post info.
  • Native support for the MySQLi extension (for MySQL 4.1 and up)
  • Spider display on Who's Online is now configured via a .xml file which allows for several configuration options.
  • The unfinished Event Reminders feature is finally working. You select how long before an event that you would like to be reminded and vBulletin will send you an email reminding you.
  • New Can View Thread Content permission. You can now allow members to view thread titles but not the actual posts within.
  • New Can Upload Animated GIF permission for custom avatars and profile pictures.
  • Attachments can now be uploaded from an URL as well as from the user's computer.
  • Beta 2 brings a totally rewritten message editor. This new editor has more extensible code, more features and should be quite a bit faster (especially for IE). There are a significant number of mandatory template changes because of this (please see below). More extensive information about the new message editor is available here.
  • The phpinclude_start and phpinclude_end templates have been removed. You should use the global_start and global_end hooks instead.
  • The forum description field is no longer limited to 250 characters. In addition, boards that like to use HTML markup in their forum titles will notice that the forum title within <title> tags will no longer include HTML.
  • To open or close a thread from forum display, you now use a double-click instead of a single-click.
To just name a few. Browse the threads on this site where the little things are being found by members and posted.

The announcements also hold template changes-lists, so that could give away some new little things.

hope this helps clear up a few things.