Dell's patent for a dual-display device was published by the WIPO last week detailing how the OEM plans to address some of the shortcoming of foldable displays such as consistency in brightness, color, and contrast levels. The patent also talks about addressing the problem of flexible OLED screen burn-in indicating that Dell is indeed working on releasing a foldable OLED dual-display laptop in the near future.
https://www.notebookcheck.net/A-Dell-XPS-15-with-a-foldable-dual-screen-OLED-display-could-be-a-reality-in-the-near-future.435042.0.html