Code found buried in the iOS 7 beta suggests Apple is testing deep LinkedIn integration, with a single sign-on functionality similar to the current Twitter and Facebook implementations. According to Hamza Sood, who highlighted some hidden features in the upcoming OS, the LinkedIn code isn’t yet complete so it’s not active within iOS 7, but its presence could certainly mean the feature will come in a later update.
However, 9to5Mac notes that just because there are hints of LinkedIn integration doesn’t mean we’ll see it in the final build. Apple tested Facebook integration all the way back in iOS 4, but nothing appeared until iOS 6—that same situation could happen here. If LinkedIn does get added, the service will join up with Facebook and Twitter, and the most recent additions, Vimeo and Flickr.
Apple has already announced LinkedIn will be implemented into OS X Mavericks, so seeing the same thing on mobile wouldn’t be unusual. If we do see something, users will likely be able to easily share Web links and other content via share-sheets through iOS applications.