They're gonna be just like the golden dollars of a few years ago, except, that they are going to be like the quarters have been since 1999. Doing 4 presidents per year.
Presidential $1 Coin
The other differences, are, that they will have "In God We Trust" and "E Pluribus Unam" on the rim, rather than the face or back, like most current coins. And, they won't have the word "Liberty" on them. They will also have the Statue of Liberty on the back.