It seems that they did build a probably quantum but quite likely not computer. They are actually solving some optimization problem. And they do this quite well.

It seems that they did build a probably quantum but quite likely not computer. They are actually solving some optimization problem. And they do this quite well. However as far as I understood, they did not convincingly demonstrate that they are actually using a quantum version or a classical version of the system. And quite likely they can not run arbitrary computations. So it seems that the jury is still out, if they did build a quantum computer or a very specialized classical hardware.