Yes, we have a 3rd row option no matter if your Traverse has bench or bucket seating.
For bucket seating, the 2nd and 3rd rows are all one continuous piece, and is connected by a middle piece that goes between the 2nd row seats. This means that the floor between the seats is also protected, which is great if you have kids that are frequently getting in and out between the bucket seats.
For the bench seating, the 2nd and 3rd rows are sold separately, so if you don't need the last row to be protected, you can just order the other rows instead.