Kerry Hayes/Twentieth Century FOX
04/01/2009 AT 02:20 PM EDT
Web-savvy Hugh Jackman
fans may not have to wait until May 1 to see the actor in the highly anticipated X-Men Origins: Wolverine
On Tuesday, an unfinished version of the film was leaked online, according to BBC News
. The copy, which was uploaded to file sharing sites, has incomplete special effects.
Meanwhile, Jackman, 40, announced during an appearance on On Air with Ryan Seacrest
that there will be a contest to determine where the April 27 movie premiere will be held.
Fans can vote for their hometown or favorite city on the official movie site
"The town that has the most amount of votes is going to get us there," explained Jackman, PEOPLE's reigning Sexiest Man Alive
. "I hope we go to someplace I've never been in my life before."
Jackman then joked that he and the other stars (which include Liev Schreiber and Ryan Reynolds) will be – in a fashion move inspired by Wolverine – "all in tank tops."