Interesting Star Wars snippet from Jedi News.
The site states: "An unnamed source has informed us that Ian McDiarmid is set to return to the galaxy far, far away for a part in Episode 7."
The site continues: "The specifics of the role are unclear, but it seems likely that McDiarmid will be returning to his signature role of Palpatine," adding: "Whether as the original [Palpatine] or a clone of, we are yet to discern."
Jedi News has updated the story to debunk the theory that Palpatine will be a clone as seen in Dark Horse Comics' Dark Empire trilogy. Apparently he will appear as a ghostly apparition much like Obi-Wan Kenobi in The Empire Strikes Back and Return of the Jedi.