This is on the Minelab website, not much there now, but I am sure this is where the official release info will appear. They have the page up so it will embed into Google searches, and since it is Minelab, the page should get top ranking soon.
https://www.minelab.com/usa/metal-detectors/gpx-6000
Minelab GPX 6000 Data & Reviews
Minelab GPX 6000 Accessories and Spare Parts
Minelab GPX 6000 Owner’s Manual
The Fastest, Lightest, and Simplest Way