"I think my eye might open at the end of the first film and then you'll get the rest of me in the second."
This interview took place before it was confirmed that they are adding a third movie to the already-planned two-part saga, which may offset this notion of introducing Smaug in the first film. It is, though, still possible that we may see Smaug's eye-opening scene at the end of The Hobbit: An Unexpected Journey as planned, to tease the follow-up The Hobbit: There and Back Again the following year. There has been no word on what the third movie will be called yet, nor do we have any story details. This third chapter may not have anything to do with Smaug at all.
The Hobbit: An Unexpected Journey was released December 14th, 2012 and stars Ian McKellen, Martin Freeman, Richard Armitage, Ken Stott, Graham McTavish, William Kircher, James Nesbitt, Stephen Hunter. The film is directed by Peter Jackson.