A new Monster Hunter PSP game will be released in Japan by the end of the year.
It's simply dubbed Monster Hunter Portable 3rd. Capcom's aim is very much to continue where the rip-roaringly successful (in the East) last instalment, Monster Hunter Freedom Unite, left off. To that end, co-operative play will gain "new elements of communication" as well as extra layers of polish.
Also promised are an improved Felyne Comrade System plus, of course, new monsters to kill and regions to explore.