We'll find out this week what the tech giant is planning and how virtual and augmented reality factor into its goal to remain the world's most valuable company, as well as updates on the world's most popular operating system, Android, and possibly details on a return to China. On Wednesday, Google CEO Sundar Pichai will take the stage at the Shoreline Amphitheatre -- a 15-minute walk from his office at Google's Mountain View, California, headquarters -- and deliver an update on the company's current and coming projects. Nominally a conference for developers, Google I/O is really a way of keeping everyone updated on what it is working on, to help give products that are underperforming a promotional push and to remain in the public eye about other projects that may have slipped from the public memory due to being in development so long. Last year, it was all about a big update to Android; the previous year Google pushed Android TV and Android Wear; in 2013 it was the launch of Google Music; and 2012 saw a team of skydivers drop onto the Moscone Center stage in San Francisco during the keynote, shooting their exploits on Google Glass and live streaming it to an awestruck audience. This year, while we will hear about Android, Chrome OS, driverless cars and Project Ara, the big focus will be on the tech world's hot topic: virtual reality.