I just hear from the host:
As for the dish, we really don't place any rules on the dish creation, so
you can go past year nominees or winners if you have a great idea. I
would say that most dishes do try to stay with the current year
nominees, but they are not restricted to any category. People have even
dipped into the Live Action Short nominees in the past.
Dipping into the live action shorts: more cheap porn?