The upcoming Xbox 'Scarlett' family of consoles will feature two variants codenamed 'Anaconda' and 'Lockhart' as successors to the Xbox One X and the Xbox One S respectively. Lockhart is expected to be as powerful as the current gen Xbox One X while Anaconda is aimed at providing a more cutting-edge experience. Apart from Scarlett, Microsoft is also expected to announce the disc-less Xbox One console as early as 2019.
https://www.notebookcheck.net/Upcoming-Xbox-Scarlett-family-to-have-Anaconda-and-Lockhardt-SKUs-disc-less-Xbox-One-to-launch-in-January-2019.381651.0.html