I have also bought the Diamond. Now have SE. The dealer says ALL of the hoops EXCEPT the mega hoop will fit. Also, all of the feet work. I am anxious to get mine home, but they insist I have the lessons first and cannot get those until late this month or October. I really want the huge hoop that comes extra. Since the mega hoop did not come with my SE I will probably sell it privately. It can be used on the D1, too.
The answer to your question is yes. All of the hoops that you had with previous designers will fit. I specifically asked that questions when I thought about trading up from the SE, because I have several different hoops. I have not traded yet, trying to justify it.
That's what I do, telling myself my Designer 1 is 9 years old in October, but did I use it enough to buy a new one..
One of the Gerrys has it... can't remember which one on CUTE. :-)
That must be Gerryb and not Gerryvb, as the Diamond is introduced to the dealers here on October 20th and my dealer does a demonstration evening on the 21st. Tempting!!!