We has seen many feature in iOS 8 beta 1, at iOS 8 beta 2, Apple make any improvement and bug fix. However, there are still some hidden feature Apple has not officially announce at their WWDC earlier this month.
Another hidden feature that found in iOS 8 beta 2 is the "City Tours" feature, when you activate the city tours in the Map App. The app will automatically bring you to their "Fly Over" building and let you tour around the building.
See the video below: