Hi @Maw -
Welcome to the forums!
There isn’t a target launch date for the Navigator rev yet, but hopefully it will be in Q2 or Q3 this year.
In the meantime, you can use the existing Navigator with the Pi 5 and the latest BlueOS 1.4 beta versions, but expect to need to disable one of the magnetometers (done under Vehicle Setup / Configuration / Compass), as the stock cooler fan is positioned very close to it and will keep it from being calibrated / used.
That launch date has gotten tied up with some other, related updates to the BlueROV2, based on our thorough testing with Pi5 hardware. It turns out that the Pi5 is much more sensitive to its 5V power supply (prefers 5.1V) and so an update to the power module, which includes an external ROV on/off switch, is required as well. High quality, robust solutions are never as easy or simple to invent as you’d hope!