Updated workflow for users who have incompatible add-ons
The update procedure will differ on user basis depending on the extensions that they have installed. For example: if you have 1 incompatible add-on, Mozilla will not ask you to update Firefox for 7 days, unless developer fixes the issue. After the grace period is over, an update notification will be displayed, informing user about the issues and also offering to either update the Firefox web browser or remind later.
Instead of updating web browser upon the launch, Firefox 13 will do so during the current active session, which means that after the restart, you'll be set.
Mozilla explains, such behavior will improve user experience:
Yesterday, Johnny was about to leave home to go to work but he wanted to check his Facebook one last time before heading out the door. He launched Firefox but rather than being taken right to Facebook, he was presented with a 15 second delay, staring at an updater progress dialog. It wasn’t terribly long, but after seeing this same thing happen every six weeks, Johnny decided he hated Firefox and moved to IE.
With the new and improved Firefox, with this feature implemented, Johnny is never frustrated with updates ever again.
Source: Mozilla Wiki, via Favbrowser
Edited by Liskiller, 23 January 2012 - 05:51 PM.