THE FLASH TV vs MOVIE SPECULATION
When the Suicide Squad movie was in development, the tv shows had to kill off all of their Suicide Squad characters that were developed, this was to avoid confusion and some other rights and issues.
So with the Flash having his own tv show and movie, I am sure that there is going to be some major confusion with average viewers of both and there right be some rights issues.But what I believe the Flash tv show is going to do in 2018 (season 4), the first half at least is that the Barry Allen Flash will be killed off, for the time being, possibly being in the Season 4 mid-season finale.While Barry is dead, Wally West will take over the mantle of the Flash like he did in the comics in the 90's.This would avoid confusion with the movie which is centered around the Barry Allen flash, played by Ezra Miller.
So the wrap-up, the Flash tv show Season 4 will air around October 2017, in the mid-season finale, Barry Allen will die, Wally West will be the Flash in the back half of Season 4 while the Flash movie is going on, and then at the end of season 4 Barry Allen will come back from the dead.
This is the most likely solution that DC is going to take when the time comes in 201, but this is all speculation.I would like to hear your thoughts on this down in the comments below.As always thanks for reading, take care.