Android Marshmallow update with Oxygen OS 3.0 for OnePlus 2 under testing

OnePlus 2 could soon get Android M aka Marshmallow update with Oxygen OS 3.0.
OnePlus 2 users could soon get the Android Marshmallow update on their smartphone, as the company is currently testing the latest OS for its OxygenOS 3.0 version.
AndroidPolice recently put out leaked screenshots showing the OnePlus 2 running the latest Android Marshmallow update with Oxygen OS 3.0 on top.
Based on the screenshots the update appears to bring some new wallpapers, customisations for homescren, slider fo