https://wccftech.com/today-in-android-lg-g6-galaxy-s7-and-s7-edge-get-oreo-on-t-mobile-and-more/

The LG G6 Oreo update saga is nearly complete, as the update has been rolled out by most carriers in the US. Today, T-Mobile has finally gotten around to pushing Oreo to the LG G6. The update carries build H87220a number and includes the Oreo system update as well as various unnamed bug fixes. To prevent network congestion, T-Mobile set the updates on a scheduled daily limit, so you might have to wait a few days before you get it.

Related Today in Android: Samsung’s Dual-SIM Galaxy S7 Receiving Oreo 8.0 Update and More