The movie X-Men Origins: Wolverine is not yet out, but it is granted a huge worldwide success. So one should not wonder that there are already talks about a Wolverine sequel.
MTV recently talked to Hugh Jackman (who plays the role of Logan aka Wolverine) and asked him about the path Wolverine 2 may take:
Here's what Hugh Jackman said about the Wolverine movie sequel and what he'd like to do:
(Click on the picture to enlarge it.)
Hugh Jackman's words aren't innocent. I am quite sure he talked about the Japanese arc of Wolverine with Director Gavid Hood.
When asked if they were going to shoot in Japan for the first Wolverine movie during an early interview with Superhero hype (here), Gavin Hood once answered:
So we may hope to see fights opposing the adamantium claws of Wolverine to samurai swords of yakuzas. I am even more impatient to see Wolverine 2 even if the first movie isn't released yet!