Android 2.2 was introduced at Google's I/O conference in San Francisco this past May. It promised to add a number of much-wanted changes and additions to the mobile OS, and even a few things that Apple's iOS does not offer. We've recently acquired the final gold build of Android 2.2, or "Froyo," on our in-house Nexus One, and we'll be detailing the changes and performance tweaks in the pages ahead. Join us as we take a deep dive into the world of Android 2.2, Google's latest and greatest mobile OS...