Facebook is preparing significant updates for its primary iOS app and its Facebook Messenger app in the near future, reports 9to5Mac. The main Facebook for iOS app will reportedly feature the social network's "Graph Search" feature, which was introduced last year and allows for users to enter specific search queiries for better results. Meanwhile, an updated Facebook Messenger app is set to feature iOS contacts integration and sport a look with heavy white space similar to the design aesthetic of iOS 7, with another version similar in looks to the Messages app on iOS also being tested. The report also states that Greg Novick, who was pa