The Blackberry KEYone received a maintenance update prepping it for Android Oreo a few weeks ago, and now a document has been revealed that shows the device penned down to start receiving the Android 8.0 Oreo update on June 28.
https://www.notebookcheck.net/The-Blackberry-KEYone-s-Oreo-update-is-finally-around-the-corner.310786.0.html