Nokia is still tinkering with their system apps on their Windows Phone 8 Lumias. The app Extras + Info, which is a meta-app for Accessory agent, Feedback to Nokia, Nokia First Use Experience and Warranty registration, controls a lot of behind the scene features for the Lumia and as such, are considered to be relatively important.
Like all previous system updates from Nokia, we’re unsure of what the changes are with this rollout. For all we know, they gave language support in Samoa. Or they fixed a major bug.