Jimmy W,
Remember a year or two ago when the 16 gauge was so popular and Remington came out with it in the 870? Now the popularity will slowly die out and you won't hear about it for another 20 years.

This isn't true, the 16 gauge is more popular than ever, and it continues to grow every year. More guns are be chambered for it, more shells and loading components are being made for it.
The 16 will never die!