You can choose from several entrees. You can no longer get salads and other appetizers and there are no rolls (which I remember as being very good). The "appetizer" is now for the table and is pretty sad. Not much too it -- I can't even remember it. A few nibbles of cheese and whatnot -- can't cost more than 50 cents to serve.
The lunch isn't near as nice as it was before it became a character meal. However, the Princesses were very gracious and spent lots of time with our kids.
The link posted is out of date. There is now no choice about an appetizer. And, I don't think you can get prime rib at lunch anymore, though I don't recall for sure. There is no choice about dessert. It was a mini cobbler-type thing.