Referenced article: https://fortune.com/2019/09/20/google-claims-quantum-supremacy/
In what turns out to be a leaked paper that has not been peer-reviewed, Google has developed a 53-qubit quantum computer.
This is a big deal because quantum computers do certain kinds of tasks really well. Namely, brute-forcing encryption. If Google's 53-qubit system ends up being real, then it's a sizable advance over previous systems.
Right now, these systems are not a threat to our current encryption protocols used for crypto, banking, email servers, and so on. But eventually they will be.
I can't help but wonder if the BTC maximalists will split over this issue in the future where the Remainers insist on no changes to the protocol and the Leavers insist that they have to change with the times.