This is not a rumor.
Bane is an interesting choice. Well known to comics fans, but barely known by everyone else, he was the main villain in a major crossover Batman event in the 1990s, then no one seemed to know what to do with him after that, until very recently when Gail Simone's Secret Six found a home for him.
Catwoman is, of course, one of the most iconic characters out there.
Anne Hathaway is a fairly safe choice for Catwoman, since she fits the bill of a sexy brunette. Tom Hardy is strange for Bane, since he is neither Hispanic, nor a hulking wrestler type, so that might imply a pretty different take on the character.
This is very exciting.