That's it. That's the new block hash causing the Bitcoin community to question everything thing they know. OK, maybe a bit of an exaggeration, but it does have people talking.
Theories on what it is, or means have included everything from the real Satoshi Nakamoto, to time travel, to quantum computing, to the theory of everything.
A great Medium post by user "coop__scoop", outline various theories on what it could mean (if anything at all).
I guess we can consider this a welcome distraction from this ongoing bear market.
Happy trading and HODLING!