https://thenextweb.com/insider/2018/10/19/oneplus-pushes-its-6t-launch-event-up-to-avoid-apple-overlap/

We’ve known for a while that the OnePlus 6T would launch on October 30. It’s set to be OnePlus’ most ambitious device to date, with pre-launch coverage pointing to a smaller notch, and in-display fingerprint reader, and official carrier support via T-Mobile.

But then Apple announced it was hosting an event the same day.