Havlat won't be traded right now, they just traded Lang and thus they need Havlat if they want to make the playoffs. However, if they're out of the playoff race by the deadline (which I think they will be), we'll see Havlat moved.
In fact, I'd go as far as to say he'll be the most sought after forward at the deadline.
That's not enough for Havlat...but in a way Atlanta needs Exelby and Reasoner right now to keep the lockeroom loose and help Anderson get his system going. That may be more important overall than the uptick in scoring that Havlat would provide.