Hot off the press. Minelab have finally confirmed that their newest detector which will be launched in about 2 months will be called the GPX6000.
A bit more info.
Minelab GPX 6000 - Metal Detector Reviews - DetectorProspector.com
Here you go, a little bit more info on this https://www.minelab.com/gpx6000
And some more.
Doesn’t appear to take the multitude of coils that fit the GP & other GPX detectors. Only the two that have been made for it. The smaller coil is a mono & the bigger a DD. Minelab should probably have called it something else & not a GPX. So be aware that if you have an earlier GPX your coils are useless on this 6000. Just a heads up. Also it is not rated by Minelab as being better than the GPZ.