Sony's PlayStation Motion Controller has gone through a few different names during its development, but "Arc" has cropped up far more than any other over the past few months, and it's now looking increasingly like a sure thing. While any official announcement will likely have to wait until GDC next week, the folks at Siliconera have discovered that Sony recently filed to trademark the name "PlayStation Arc" in Japan, which is just the latest form of confirmation of the name following a domain registration, and some noticeable name-dropping from
