It's never been officially declared discontinued by Hasselblad and remains on their website. However, well before last fall we were encountering dead ends for inventory checks for certain H components from our Hasselblad distributer. What prompted this notice from us is that our Hasselblad distributor this week officially sent us an EOL on all products.
Internally i think it has been dead for some time.
I wrote to Hasselblad support last November about an error on the support website.
"There is an error in the website at
https://www.hasselblad.com/learn/tips-and-tricks/battery-handling/Figure 1 and 2 have the same text
Figure 2 should read Finding exact battery level on H6D system."
The response was
"We will verify this information, but as the H6D system cameras were discontinued, I don't think that the user manual will be modified.
However, thank you for your feedback."
It would have taken 5 minutes to fix and there will be a lot of H gear in use for a long time yet.
I am a little disappointed that user feedback seems to be no longer important.