Announcing, not introducing. Shipments in 2019. They're missing this holiday season.
The $399 price isn't real until it ships. I'll bet it ships only as some "bundle" that costs well over $500. The Microsoft HoloLens has comparable hardware and that's several thousand dollars.
How is this hardware remotely comparable to the hololens? This an Android phone with two magnifying glasses and some cameras attached, and they're already selling a $200 version without the cameras. The expensive part of hololens is the AR optics/display.
The $399 price isn't real until it ships. I'll bet it ships only as some "bundle" that costs well over $500. The Microsoft HoloLens has comparable hardware and that's several thousand dollars.