Nothing solid at this point & could be just talk but according to Daily Mail:

Will Robert riot with the Tory roaring boys?

Some of our top young leading men are being assembled for a movie about an Oxbridge dining society not unlike the one David Cameron, George Osborne and Boris Johnson belonged to when they were at university.

Max Irons, Sam Claflin, Douglas Booth and Robert Pattinson are just four of the actors in various stages of negotiations to be in the film version of Laura Wade’s incendiary play Posh. Focusing on the fictional Riot Club, it explored an elite, refined world of privilege.

Posh opened at the Royal Court three years ago and later enjoyed a West End run. The film version is being directed by Lone Scherfig, who made An Education — the picture which helped to make Carey Mulligan a star.

The story takes place in the private dining room of a pub, where Riot Club members meet for one of their notorious dinners.
They trash the joint, and things go more than wrong when someone hires a prostitute.

Wade has adapted her play for the screen, opening it out so we learn more about the background of the young Tories who run the club as if they were running the country.

Scherfig, her casting director and producers from Blueprint, Film 4 and the BFI have discussed various actors they’d like to be involved.
They want Irons for a main part. He opens in a major film later this month called The Host. Claflin plays Finnick Odair in the next Hunger Games film Catching Fire.

Booth is in the forthcoming Romeo And Juliet, and he was a fine Pip in the BBC’s TV version of Great Expectations.
Pattinson is in very early discussions only. At the moment, he’s filming David Michod’s Outback western The Rover in Adelaide.
But when he finishes next week, the Posh script will be one of several he’ll be mulling over.

Part of the problem of assembling such a large ensemble — there are ten members of the Riot Club — is that at some point they all have to be seated around a table together; and getting schedules to match up is a complex undertaking.

Sounds like a great project but as I said, there may be no truth to it.  It wouldn’t be the first time as we know. Only time will tell.  Any talk of a new Rob project, though, even just a possible one is so exciting.  According to IMDb Pro, the project is listed as ‘Pre-production’ with no cast listed at this time.   We’ll keep you posted as always.

Thanks to @Over_it_already for bringing it to our attention.