The upcoming version of Android - L - is designed to work across all devices on the same OS. It will also look different, include more animation, colors and a feature called material design, which lets developers add shadows and seams to give depth to visuals on screen.
Google introduced 'Android Auto' software for cars, syncing smartphones with in-dashboard screens and controls.
It brings apps like Google Maps and Spotify music service to an "interface built for driving."
It also introduced a series of smartwatches under 'Android Wear' - A new LG G smartwatch and a Gear Live smartwatch by Samsung
A Moto 360 smartwatch is due to join the Android Wear lineup later this year.
Smart televisions with 'Android TV' software. Android smartphones, complete with voice command features, could be used to direct searches and more on television screens.
Cloud: Steps to make Android devices and services offered in the Internet "cloud" amenable to workplaces. Improvements include tools for separating personal and company uses of mobile devices, better handling of files made using MS Word, Excel or PowerPoint.
About 6,000 developers, bloggers and journalists flocked to the event. The photo shows Google CEO Larry Page and Sundar Pichai, senior vice president of Android, Chrome and Apps at the event.