Sure sounds as if the Arc is in the cards:
http://racing.bloodhorse.com/article/45743.htm
Following Curlin's dominant win in the Stephen Foster Handicap (gr. I) June 14, trainer Steve Asmussen says he's planning to work the reigning Horse of the Year over the Churchill Downs grass course while considering a bid in France's Prix de l’Arc de Triomphe (Fr-I), Europe’s greatest race for older horses.
Asmussen said he would work Curlin on the turf and find a grass race for him in North America on the weekend of July 12-13. He did not say if he had a particular race in mind. He would prefer a race over an international style course, such as those at Arlington Park, Belmont Park or Woodbine. Major turf races for older horses scheduled that weekend include the $500,000 Man O’ War (gr. IT) at 1 3/8 miles at Belmont Park and the Arlington Handicap (gr. III) at 1 1/4 miles at Arlington Park.
Were the champion turned in a “Curlin-esque” performance in that race, he said the 4-year-old son of Strike Smart would ship to France to train at Chantilly. Curlin would probably have one race prior to the Arc in France, most likely a traditional Arc prep like Longchamp’s Prix Foy (Fr-II).