https://techcrunch.com/2023/07/25/twitter-changes-its-official-handle-to-x/

As part of the ongoing rebranding, Twitter has changed its official handle to @X. Other official handles related to the company have either let go of the “Twitter” moniker or replaced it with X.

TechCrunch previously reported that the social network hadn’t reached out to the original owner of the @X handle — Gene X Hwang of corporate photography and videography studio Orange Photography. However, earlier today Hwang tweeted “All well that ends well” from his new handle @x1234567998765. It’s not clear if he sold the handle to Twitter.