https://www.cnet.com/news/microsoft-appears-to-tease-hololens-2-in-trippy-video-ahead-of-mwc/

The original HoloLens AR headset was released in 2016, layering hologram-like 3D graphics onto the real world in a stand-alone package, but has some technical limits. The next headset may improve things like field of view and bring more advanced controls, as well as eye-tracking.  In November, Microsoft won a $480 million contract to supply the US Army with HoloLens headsets.

"We have a lot of exciting things to talk about at MWC 2019," said a Microsoft spokesperson.