Ive seen an IM with 2600 elo I believe Anton Demenchenko.
Will Eric Hansen be the first 2600 IM?

There was an article about him I think. He's a GM-elect and should get his title officially by the end of this month. There are a number of other IMs around his level according to the ratings on the Fide site.
To be honest I don't know if he already has the 3 GM norms and is waiting to be ratified but its bizarre to see someone rated 2568 with 'IM' next to their name. He may have lost points at the just finished Basle Open but he's still got to be 2560..I just don't see how its possible NOT to have 3 GM norms with that rating