Aside from working on the US versions of Riz-Zoawd (aka The Wizard of Oz: Beyond the Yellow Brick Road) and Dragonball: Revenge of King Piccolo we haven’t heard about any new Media.Vision projects.
A job listing on their site reveals the Tokyo based publisher is moving into the iPhone area. Media.Vision is looking for a contract or part-time iPhone programmer. Applicants should have experience with iPhone development and understand an object oriented programming language. Possibly related is a game planner job offer where a new hire will work on a new project.
Aside from Wild ARMs, Media.Vision developed Gunners Heaven, which plays a lot like Gunstar Heroes, and more recently Enkaku Sousa, a PSP visual novel where you help free a wrongly imprisoned chap before twenty three days lapse.