(Though, Flashpointwillspill over in a very specific way onArrowwith David Ramseys Diggle.)

This is my prize.'

Most of the changes are to Barrys life and him being at the nexus of these changes.

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Credit: Katie Yu/The CW

We wanted to do something bold and start the season off with a bang, Kreisberg says.

So we decided to get Wally in the suit.

The circumstances of how that happens, well, youll have to watch to see.

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Katie Yu/The CW

Cisco, meanwhile, is now an ostentatious billionaire running apparent S.T.A.R.

Labs replacement Ramon Industries.

We just had a lot of fun with the idea of seeing that version of the character.

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A selfish, rich, cowardly Cisco couldnt be further from the Cisco that we all know and love.

The audience is discovering as they watch it whats different and whats the same.

But Kreisberg, again, is staying mum, instead praising Feltons addition to the cast.

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Katie Yu/The CW

Weve obviously always been fans of Toms, he says of casting theHarry Potteralum.

Weve all seen him grow up from an amazing child actor to an amazing adult actor.

The Flashpoint timeline will also welcome back a familiar face, Reverse-Flash, who will serve as Barrys conscience.

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Katie Yu/The CW

Theres a couple of nods to the comics in there, Kreisberg says.

Theres actually some dialogue from the comic in the episode.

He begins to see that the cost of him getting his happy ending might be too much to bear.

The Flashreturns Tuesday, Oct. 4 at 8 p.m.

ET on The CW.