Revolvers fit into five basic categories and they are starting to come back into popularity again". We are starting to see new editions of old favorites like the snub nose in synthetic and lightweight versions.
Cowboy action shooting brought back the single action.
But the newest idea is a revolver that shoots both shotgun shells and real calibers that substantially can remove a perp or place fair game on the table. S&W calls it the Governor, Taurus calls it the 4510.