Bummer, the Note 8 and S8 Oreo update won't bring Treble support
The new features that Android 8.0 Oreo brings aren't overwhelming, but one of them is of particular note - Project Treble. It is Google's final push to remedy slow Android updates by separating the basic, core Android framework, from the manufacturer image, and allow it to be updated much faster than before.
There are a few Project Treble phones currently on the market, including Huawei's Mate 10 and Mate 10 Pro, but, unfortunately, Samsung's ultrapopular Galaxy S8 or Note 8, won't be one of those after their respective Oreo updates, it seems.
An app called Termux was run on both phones, running their respective Android 8.0 betas, but it didn't return a "true" value, so Samsung has either decided to keep Treble in hiding until the retail Oreo update version hits the handsets, or the Galaxy S8 and Note 8 are never meant to have their Android core split from Samsung's Experience UI overlay. Bummer.