As a big fan of Keanu Reeves, I'm very excited for 47 Ronin. Some leaked posters hit Topic Stock and got picked up by Bleeding Cool. As you can see from the posters, they seem to be playing with a few different styles. But the one consistent thing on all of them is the logo which must have already been finalized.
If you're not familiar withe the legend of the 47 Ronin, check out this info via Wikipedia:
The story tells of a group of samurai who were left leaderless (becoming ronin) after their daimyo (feudal lord) Asano Naganori was compelled to commit seppuku (ritual suicide) for assaulting a court official named Kira Yoshinaka, whose title was Kōzuke no suke. The ronin avenged their master's honor by killing Kira, after waiting and planning for almost two years. In turn, the ronin were themselves forced to commit seppuku for committing the crime of murder. With much embellishment, this true story was popularized in Japanese culture as emblematic of the loyalty, sacrifice, persistence, and honor that people should preserve in their daily lives. The popularity of the almost mythical tale was enhanced by rapid modernization during the Meiji era of Japanese history, when it is suggested many people in Japan longed for a return to their cultural roots.
It's been said this movie version will add some supernatural elements which should be interesting to see, if the movie ever really gets finished.