Yes, this is exactly what it is doing [1]. The area of research is Noisy Intermediate Scale Quantum, and has arisen specifically to prove that quantum supremacy is possible in practice. It is currently the focus of pretty much all quantum computing research because attempts to produce a generalized quantum computer have all failed miserably. Existing practical quantum computers (like DWave) perform various annealing tasks but have basically proven to be inferior to probablistic algorithms computing the same task.

To date all attempt to produce valid claims of quantum supremacy via this channel have failed on closer inspection, and there is no reason to assume otherwise in this case until researchers have had time to look at the paper. There's a number of skeptics in the quantum computing field that believe that this is simply not possible.

[1] https://news.ycombinator.com/item?id=42369463