Earlier quoted context omitted.
While Dell sells many models with Linux preinstalled, it only does so in limited regions. Even within regions, it can differ between what is offered online and what is offered in stores. The most probable answer for an individual is no, Windows only. Despite the fact that at least earlier releases are Ubuntu Certified, per https://certification.ubuntu.com/desktop/models/?query=XPS+1...
Since we are talking about the xps 13 specifically, such general statements are not really relevant. All recent xps 13 models have been available as "developer editions" with ubuntu and there is no reason to expect this new model won't be as well.
The developer editions are US only I believe, and are unavailable to most customers.