One of the more mysteriousthat users have noticed in the beta period is a location-aware app shortcut on the lockscreen. Full details about this feature aren't available yet but here's what we know so far.
Just like the camera icon / grabber on the lockscreen (bottom-right), an icon may appear on the bottom-left of the lockscreen. This icon is mostly of an app that you have installed already on your iPhone (but reports confirm that icons of apps that aren't installed show up too). And, most notably, your location seems to trigger when the app icon shows up.
Also Read: Awesome iOS 8 Features
Like shown in the screenshots, the lockscreen app shortcut feature puts an app icon on your lockscreen. Tap and swipe up (like how you pull up the camera grabber) and the app will open.In one use-case, a user going to the Apple Store (or near it) found the Apple Store app icon show up as a shortcut on the lockscreen.
In one use-case, a user going to the Apple Store (or near it) found the Apple Store app icon show up as a shortcut on the lockscreen.
We don't know what apps/app icons show up but the feature definitely is coming pre-configured by Apple. But since we're talking about a location-aware feature, I think any app that has to do with iBeacons will also be a part of this new iOS 8 feature.
Of the major changes to the lockscreen, one feature is being able to “quick reply” from the lockscreen notifications – a feature, I must admit, is not very innovative or novel.
The QuickReply feature lets you swipe to answer, accept, dismiss notifications on the lockscreen easily.
We haven't found a switch that would turn on/off this “app-shortcut on lockscreen” feature but there's a Location-Based Alerts in Privacy → Location Services → System Services which could control this feature.