Minelab never puts out those videos you are asking for, PRE-release. They didn't with the EQX, either. Anyone who "field tests" the machine, pre-release, is sworn to secrecy by an NDA. They are not ALLOWED to talk. The videos you hope for, are always done POST-release, by customers who purchase the unit, and to that testing. Minelab is very secretive about their tech; they do NOT allow an in-depth performance details to be shown pre-release. They put out videos that show just the basics, and no more, prior to the machine being "on the market."
The videos you want, will come. And I feel confident the Manticore will be more than just "a cosmetic upgrade to the Equinox."
Steve