Samsung Galaxy S7 Edge (Exynos) receives Android Oreo ROM with Samsung Experience 9.0
O2 xda vs. Samsung Galaxy S7 Active: comparison and differences?
Samsung Galaxy S7 Unlocked
XDA Portal & Forums - You can buy the carrier unlocked SD820 S7 & Edge in the USA http://www.xda-developers.com/carrier-unlocked-sd820-galaxy-s7-edge-available-in-usa-bootloader-likely-still-unpenetrable/ | Facebook
AT&T (and Others) Galaxy S7 has Finally been Rooted
Android Guide: The Easiest & The Safest Way to Root Your Samsung! | by Metodix | Medium