If you’re wondering what Apple’s next big product launch may be, then this recent news from Japan should provide a pretty good clue. According to Bloomberg, the technology giant has recently filed for a patent and trademark in Japan for a product called an iWatch. The company has also filed similar applications in Russia, Mexico, Taiwan and Turkey. Apple reportedly has a team of 100 product designers working on the new touch-screen wristwatch that could be released as early as this year …