Just now Oneplus has released Oneplus 3 and Oneplus 3T with OxygenOS Open Beta 12 and Beta 3 version update, the most important change is the OS has upgraded to Android7.1.1 OS.
Oneplus 3 and Oneplus 3T new Oxygen OS beta version have similar content, besides upgrading to Android7.1.1, and this beta version has some important updates, for example,
Key updates in this build:
Upgraded to Android 7.1.1
New Shot on OnePlus wallpaper option
Gallery Improvements
New photo editor with watermark and photo straightening options
Newly added media will be highlighted in Photos section
Image location will be displayed on grid view
Media can be grouped by month and year
Folders and individual media can be hidden
General bug fixes
Known Issues and Fixes
Android pay not able to work on London TFL/Tube
This can be resolved by updating the app via Play store
Compatability issues with certain third party apps
Download Oneplus 3 Oxygen OS here: http://downloads.oneplus.net/oneplus-3/oneplus_3_oxygenos_openbeta_12/
In addition, this update has fixed some non-compatibility issue of the third-party, and other bugs.
Download Oneplus 3T Oxygen OS here: http://downloads.oneplus.net/oneplus-3t/oneplus_3t_oxygenos_openbeta_3/