https://wccftech.com/apple-hints-at-m1x-macbook-pro-in-wwdc-keynote-video-tags-on-youtube/

It was previously rumored that Apple will announce its highly rumored redesigned 14-inch and 16-inch MacBook Pro models at its annual WWDC event. Well, the company ended up just announcing software for the Mac, iPhone, and other devices. However, the company did use the 'M1X MacBook Pro' and 'M1X' as YouTube tags for its WWDC YouTube video.

Since Apple did not announce the new redesigned MacBook Pro models, Apple did use the tags in its WWDC video on YouTube. The tags were first spotted by the Apple YouTuber Max Balzer on Twitter. The new tags are among other tags that are part of the WWDC video on YouTube, like iOS 15, iOS, Developers, WWDC 2021, and many more.