Google I/O 2013 conference kicks off with marathon keynote and features session tracks on Google+, Google Maps, and more Google at its upcoming Google I/O 2013 conference has blocked out three hours — including a break — for its opening-day keynote. Precisely what the company will discuss during that marathon session on May 15 remains under wraps, although the company concedes it will involve news across Google’s major platforms or services.What that could mean is the unveiling of Android 5.0, also referred to as the “Key Lime Pie” version of the mobile platform, but published reports speculate that this release could be delayed. The “Jelly Bean” line may be continued, instead. Rumors have also circulated that Google might unify its Android and Chrome technologies.Session tracks for the conference include Android, Chrome and Apps, Google+, Google Cloud Platform, Google Maps, YouTube, and Google Wallet. Topics ranging from Android developer tools to Chrome-packaged apps to a Google+ platform overview will be presented at the conference. A road map for GWT (Google Web Toolkit) will be presented as well. In addition, the conference gives a nod to the Google Dart language, HTML5, and big data. Google assures us more sessions will be announced in the days ahead. This article, “Android, Chrome loom large over Google I/O’s opening day,” was originally published at InfoWorld.com. Get the first word on what the important tech news really means with the InfoWorld Tech Watch blog. For the latest business technology news, follow InfoWorld.com on Twitter. Technology IndustrySoftware Development