The webmaster of Amiga In a Box had recieved a similar message from the same guy before. That was discussed on the UAE discussion board. So I can assure you that this is not fake.
Amiga corporation has been a real sand in the ass for amiga fans since it's birth. Their mission should have been be to keep the memory of Amiga alive but they act as if their intention is to kill the scene. I do not believe they will ever release a new machine. They see the entire subject as "business" and are trying to make profit over the name of a once famous technology however the name "amiga" is all they have.
I claim "we" -the users- are the "amiga" not those greedy bastards.