“Fight Night Round 4″ has been taking jabs less than a month, and already publisher Electronic Arts is ready to release an expansion pack.

The downloadable pack, due out late this month, will feature Oscar De La Hoya and the battling Klitchkos (Vitali and Wladimir), plus alternate versions of James Toney and part-time car muffler pitchman George Foreman. It’s coming via PlayStation Network and Xbox Live for $9.99 and 800 Microsoft points, respectively.

Also featured this month, a free downloadable with additional gloves, trunks and shorts, and changes to the controller button controls to include uppercuts, hooks and haymakers (even though nobody has thrown one of those since the days of John L. Sullivan).

And if that wasn’t enough, a playable demo through PSN and Xbox Live in September pits Mike Tyson against Muhammad Ali in a 12-round throwdown.

Now, if EA could somehow pit Oscar De La Hoya against Oscar de la Renta …