Today, OnePlus released its latest versions of the Open Beta for the OnePlus 5 and OnePlus 5T - version 13 for the 5 and version 11 for the 5T. These versions bring a few new features and optimizations including new accent colors and a revamped UI, but the biggest update is support for Project Treble on the 5 and 5T. Project Treble is the latest solution from Google to expedite the process of updating Android's OS, which has been painstakingly slow for some of the major OEMs, namely Samsung. Treble also makes it easier for the developer community to create custom ROMs for the Android...
Source: https://www.gsmarena.com/latest_oxygenos_brings_support_for_project_treble_on_the_oneplus_5_and_5t-news-32044.php