Interesting move by Ahmadinejad

In case you guys haven't seen yet, President Ahmadinejad of Iran in a major address to the Iranian people on the 30th Anniversary of the Islamic Revolution in Tehran seemed to reposition his language and wording and overall stance towards the United States.

From the BBC:

"The new US administration has announced that they want to produce change and pursue the course of dialogue," Mr Ahmadinejad said at a rally in central Tehran attended by tens of thousands of people.

"It is quite clear that real change must be fundamental and not tactical. It is clear the Iranian nation welcomes real changes and is ready for dialogue in a climate of equality and mutual respect."

This follows just a couple of weeks ago where it seemed that Obama and Ahmadinejad were going to continue to struggle and work against each other for the next four years.

Here is the link to the BBC article covering the story.

My question is: what is really going on? Is it possible that Ahmadinejad is looking for a new era in relations with the west and the US specifically? Or, is this more empty political rhetoric that should be viewed skeptically?