Furious Fanboys is saying that Ben Kingsley is among the “huge number of actors” who’ve read for Episode VII. Kingsley has been around for decades and I doubt he needs much re-introduction, but you may have last seen him in Hugo or Iron Man 3, and he’s in the upcoming Ender’s Game with Harrison Ford.
UPDATE: Apparently this was debunked in a Full of Sith episode more than a month ago.
I’m not the biggest fan of Mr. Kingsley, so I can live with this not being true. I do think, however, that the sequels would do well to include somebody of Mr. Kingley’s renown. Or to put it differently: A new Alec Guinness. :-)