For two-and-a-half hours at its annual developer event, Google employees trotted on- and off-stage to share the company’s improvements for Android. It felt to me as if Google(s goog) crammed four hours of information in that time, given the sheer amount of new functions and changes shown off. Here’s a summary of what Google did — and didn’t — announce.

Photo by Janko Roettgers/Gigaom

Android One is a new “brand”, for lack of a better word, but what is it? Android One is a program similar to the Google’s Nexus effort; however, it’s aimed at a different type of market. Where Nexus devices are meant to show off the pure Android experience in relatively high-end hardware, Android One is for low-cost devices. Google is setting hardware specifications for Android One devices, which will run stock Android. Handset partners will produce the phones for markets where feature phones are still in the majority:…