LineageOS 15.1, the popular Android 8.1 Oreo-based custom ROM, was released in late February for a handful of devices. The official roster has since expanded to include devices like the Google Nexus Player, OnePlus 2, Google Nexus 6, and Exynos Samsung Galaxy S9/S9+ among others. Starting today, official 15.1 builds for the Xiaomi Mi 6...