Yep. I don't think there are any 3 disc Amary cases, but you can get some 3 disc Alphas (hell, I think there are 7-dics ones too!). They're the triple-wides.
Supposedly it's hard for anyone to get the multiple cases right now due to a supply shortage. I needed some double cases for some VCDs and settled with the bronze ones since the double Amaray's are impossible to find.