Bryan Cranston, best known for his turn as the character Walter White/Heisenberg, in AMC's Breaking Bad has reportedly been confirmed to play Superman's nemesis Lex Luthor, not only in the upcoming untitled Batman/Superman film, but in a total of 6 films, which could potentially extend to ten.
An official announcement is said to released after the final season of Breaking Bad has finished, with the finale set for a September 29th release, so they can essentially build off of the hype from the highly anticipated ending.
Mark Strong was reportedly also in talks, but it seems as if Cranston may have nabbed the role. It's possible that Strong's performance as Sinestro in 2011's Green Lantern may have worked against him, but it's entirely likely that he could always appear as another villain down the line, if not yet again as Sinestro as many agree, he was one of the highlights of the film.
Only time will tell if whether this is true or not, with many sources claiming that it's actually a confirmed deal. Cranston has previously stated an interest in portraying the character, but until any official announcement, take this with a grain of salt.
Daily Mail makes me think it's a massive rumour still