Well that sure wasn't the case with the Montana line. Between the Mountaineer's, the Montana's and the Big Sky's there was at least 6 or 8 new floor plans. And all of the Montana line was in the same area.
I know Montana had the new 3465 and the 3605 and another but I don't recall the model #. Big Sky had at least 2, and Mountaineer had a couple including their version of a toy hauler. Of course there was the 3400s, 2955s, 3295s and other older model numbers but all had many new upgrades from the previous year.
Personally I wish I had gone out for a third day as the 2 days we were there just wasn't enough to see everything.