Instagrams code reveals a potential portrait camera mode
See the original posting on The Verge
Analysis of Instagrams Android application package (APK) shows the app has a hidden portrait camera mode buried within its code, reports TechCrunch. Peeling open the APK reveals a portrait shutter icon that looks like it would be incorporated into Instagrams camera, which already has functions like boomerang and superzoom. APKs contain all of an apps code, including bits relevant to new features that are actively being developed but not yet activated.
Instagrams unreleased portrait mode could point to a feature that enhances photos through blurred backgrounds (the bokeh effect) and different lighting options, for instance. To access the feature you would presumably launch Instagrams camera and swipe to the corresponding mode.