The Dell XPS 15 is being reviewed by various outlets, with some focusing on the 9570 model and others comparing it to the 9500 or 7590 models. The reviews suggest that the laptop has a strong performance, with one outlet describing it as a "beast under the bonnet". However, the reviews also seem to be discussing different models and years of the Dell XPS 15, making it unclear which specific model is being referred to in each case.