Matthew Vaughn To Direct "The Golden Age"?

It doesn't look like Matthew Vaughn is planning to make an "X-Men: First Class II" anytime soon, so he's decided to try and make "The Golden Age". The director hopes to have Clint Eastwood, Warren Beatty and Jack Nicholson star in the old age superheroes film.
"The Golden Age" is a fictional novel by Jonathon Ross, who's wife worked with Vaughn on "KICK-ASS" and is currently working with him on "X-Men: First Class". Ross's novel has not yet been released, but it's already close to getting the BIG green-light by Hollywood for the movie adaption. AWESOME!
Don't know which old superheroes will appear in the novel or the film yet, but I'm assuming they may be heroes like Superman, Batman and WonderWoman..........or maybe not!