I know this isn't strictly M&M related but I was playing The Witcher 3 last night when I was given a quest to deactivate a tower's magical defences. To do this, I had to find the "user manual" and give it to a mage. This is what I found.
Good Old Games do have several Might & Magic titles available, H6 being notable by its absence. Perhaps it wasn't good enough. Anyway, H7 has been on the market for a while now and there's every chance we'll see it on GOG in the not too distant future.