When asked if the Demon in a Bottle story line is the one that is used in Iron Man 2, RDJ sts:
"Not really," Downey replied. "As a matter of fact, I think that’s probably best saved, because it’s such its own storyline. We're going for the interim space [between the origin and 'Demon']."
That's cool, I'm glad they are not jumping right into the whole Demon in a Bottle storyline just yet. The movie going audience loves Tony Stark and it does feel a bit soon to show the evil that comes along with alcohol addiction in such a main stream character. I think this is best saved for after The Avengers are made. Then Tony will have a reason to get plastered as the amount of stress builds while having The Avengers initiative to cater to as well as being Iron Man.