Reports are coming in from all over that Iron Man pretty much owned the box office this weekend. To my knowledge it didn't break any records yet. But it came mighty close, and that is good enough for me to warrant the two sequels already being planned. Here's the scoop,

"Paramount and Marvel Studios’ summer tentpole “Iron Man” mined enough in its box office debut to join the pantheon of all-time highest openers, grossing an estimated $104.2 million domestically and $96.8 million internationally for a worldwide cume of $201 million in its first five days.
“Iron Man,” directed by Jon Favreau and toplining Robert Downey Jr., grossed an estimated $100.7 million from 4,105 theaters for the weekend and $3.5 million more in Thursday night previews. That is the second-best opening ever for a non-sequel after Sony and Marvel’s “Spider-Man,” which opened to $114.8 million on the same weekend in 2002, and the 10th best opening of all time, according to Rentrak."

To keep with the Iron Man/Marvel news. Marvel made an announcement about the release date for Iron Man 2 as well as hinting at the upcoming Thor movie! From IESB.net,

"Marvel today updated its feature film slate strategy and plans for the next three years, locking in key release windows for its character franchises.

In order to focus its attention on maximizing the success of an Iron Man sequel and the launch of Thor in the summer of 2010 and because Marvel believes that the summer is the optimal time to launch a new property, the Company will not release a self produced film in 2009.

Marvel plans to launch its 2010 film slate with the release of the sequel, Iron Man 2, on April 30, 2010, followed by the launch of Thor on June 4, 2010.

Additionally, Marvel is planting its feature film stakes for summer 2011 with an Avengers-themed summer - a two-picture project which will debut on May 6, 2011 with The First Avenger: Captain America (working title), followed by The Avengers in July 2011.

Marvel's Chairman, Morton Handel, commented, "Adjusting for the strong year-ago contribution from the Spider-Man JV, Marvel's Q1 2008 operating results continued to demonstrate strong global demand for consumer products based on the Company's portfolio of characters. Marvel's self-produced feature film slate launched this past weekend with a performance that firmly establishes Iron Man as a major new film franchise, and the Company eagerly awaits the June premiere of The Incredible Hulk, Marvel's second self-produced film. In addition, Marvel has been investing in other important areas of growth such as the Internet where, to lead the Company's newly formed Global Digital Media Group, Marvel recently announced the hiring of Ira Rubenstein. Marvel has a strong foundation to build from, and the Company is adding infrastructure to maximize these opportunities."

[EDIT]

Cinematial.com puts it this way,
"Similarly, in 2011, Marvel Entertainment will debut another two films. First, on May 6, 2011, we have The First Avenger: Captain America (new title I believe). Then, in July, the biggie -- The Avengers! There was no word of an Ant-Man film in there, though last we heard it was in development with Edgar Wright attached. Honestly, unless they push The Avengers to 2012, I don't see where Ant-Man could fit in. Additionally, I imagine we'll have to wait to see how well The Incredible Hulk does, seeing as they may want to sequel-ize that one too. Otherwise, Iron Man will be the only franchise to debut a sequel prior to an full-on Avengers flick."