Twitter replaces its bird logo with an X as part of Elon Musk's plan for a super app

Updated July 24, 2023

Juliana Kim

Tesla CEO Elon Musk speaks during an event to launch the new Tesla Model X Crossover SUV on Sept. 2015 in Fremont, California. The billionaire has a long-time affinity for the letter "X." (Getty Images)

This article was originally published on July 23, 2023.

A brief biography of 'X,' the letter that Elon Musk has plastered everywhere