Arrow to end after season 8

It appears to be official: Season 8 will be the last for the CW's premiere DC show Arrow.

And I'm not remotely disappointed. If anything, the show has been marking time lately while the sharks circulate. It hasn't gone over yet, but it's close.

The story is told and CW's worrying habit of doing shows to death was looming on the horizon.

However, the Arrowverse, as it's popularly known, will continue. It is almost certain that Arrow will be replaced by Batwoman, which will be the first superhero show with an openly lesbian lead.

All of the other shows have been confirmed to continue. A rumor that Legends of Tomorrow was also going to end remains unconfirmed and with the formal announcement about Arrow seems unlikely.

Five shows is probably as many as is wise for CW to have in a single franchise, so I don't expect to see any additions until they decide to end another show. Flash is the second longest-running.

But here's an intriguing theory.

CW is building up to Crisis. This could bring Supergirl's Earth-38 in collision with Earth-1, putting the shows on the same Earth.

Supergirl has introduced several Legionnaires.

Nora West-Allen, the Flash's daughter, is not using the Kid Flash name, as one might expect for a replacement for Iris West Jr.

She's using XS.

XS is the codename of Jenni Ognats, who was originally Barry and Iris' granddaughter.

And a member of.

You got it.

The Legion of Superheroes.

Is there an ultimate plan to replace Legends of Tomorrow with a Legion show in a few years? (Now it could be that they just didn't want two Kid Flashes...)