I just ate at Wolfgang Puck Cafe last Saturday for dinner. The only "restriction" I know of is the sushi counts as an entree, not an appetizer.
I haven't checked the online menus since before I went to Disney, but the menu was significantly different than what had been online. The ones I know of for sure that are gone (completely off the menu) are: crab cakes ($15 appetizer), all steaks (both filet and wolf's steak) also the chocolate fondue is gone. There may be more but those are the ones I noticed. I asked about the crab cakes and the waiter said they had just recently changed the menu. Too bad because all these items were wonderful. I don't know why they got rid of them (free dining maybe???)
Here is a link directly to Wolfgangs personal website. It looks like, just as beautifultomorrow stated, there are several changes. I too wanted the streak!