It looks like Geoff Johns is not only going to be co-writing the upcoming Flash film but will also serve as a producer. CBR is also saying that Johns has been hired by DC to be a consultant on it’s line of comic based films:
Warners hired Geoff Johns, Grant Morrison and Marv Wolfman this last fall to act as consultants and writers for its superhero line of films. While details of Morrison and Wolfman’s separate projects weren’t revealed, it was noted that Johns has worked up a new treatment for a “Flash” film, being written by Dan Mazeau. Johns will act in a producer capacity on “Flash,” which does not yet have a director.
If this news came out before the release of Flash: Rebirth I would most likely be seeing it as positive but it comes after three awful issues of the mini-series have seen the light of day so I can’t. I have a lot more faith in Wolfman and Morrison putting together a good Flash flick at this point.
No news yet on the eventual casting of Ryan Reynolds as The Flash.