Nick @ PS3Center writes:
As it turns out, the latest entry into the series did well enough to warrant a new chapter in the franchise. Word comes from a popular Japanese retailer that the debut trailer for a new Way of the Samurai game will be included in the PSP port of Way of the Samurai 2. The PSP port will also include several new features, like a Gears of War horde-style challenge mode, and is due out September 3. Don't be surprised if Famitsu reveals the new game before then, though.