Indeed ... Elon Musk followed through on his promise from this weekend, rebranding the storied social media company and completely getting rid of the familiar white bird icon and blue background. Ditto for its moniker ... now, Twitter will forever be known simply as "X."

EM touted the big change by retweeting re-X'ing his new CEO's announcement, which reads ... "It’s an exceptionally rare thing – in life or in business – that you get a second chance to make another big impression. Twitter made one massive impression and changed the way we communicate. Now, X will go further, transforming the global town square."

She adds, "X is the future state of unlimited interactivity – centered in audio, video, messaging, payments/banking – creating a global marketplace for ideas, goods, services, and opportunities. Powered by AI, X will connect us all in ways we’re just beginning to imagine."

Now, the actual site/app itself still pretty much looks the same in terms of design, function and format. In fact, you can actually still see remnants of the old Twitter floating around ... like on the search bar, for instance, where it continues to read "Search Twitter."

Even when it comes to retweets, those are labeled as such ... so on its face, it still very much feels like Twitter. It's unclear if more of a relaunch will take place over the coming days.

While Elon and co. really got the word out about the switch-up this weekend ... they'd actually been telegraphing this for a while, especially in official corporate docs tied to the organization.

The group of investors that came together to buy this thing -- again, for $44 billion -- had called themselves X Corp. earlier this year. Now, they'll be known as such going forward.

One last thing ... it appears the new "X" is going to be powered by AI -- at least according to this above-mentioned CEO. Funny enough, Elon was railing against AI not too long ago ... calling on a slow-down, if not a full-blown pause, because he thought it was dangerous.