The old Twitter logo with the new one.
Or maybe this one.

@petergleick

Either way, eventually it will end up having to incorporate an 'S' and a (variant) of 'E'. Musk is a freak, and everything revolves around that. Remember, his first Tesla models were 'S', '3', 'X'.

He also thinks he's being clever with all of this.

@petergleick So we longer will be tweeting but be X-ing? LOL the rebranding makes no sense to me
@petergleick apparently the colour of the old logo is Norwegian blue.