Multiple wordplay

We’ve had the Alien "Quadrilogy" — a quartet of "Alien" movies sold as a boxed set.

Apparently there are five "Omen" movies– so not content with boxing them up as a quintet, they are being sold as a "Pentology".

I wonder what the new word for a sextet will be? And when they get to ten, will we have a "Decameron" or something else?