Here full Agenda of Google IO 2013 with 120 sessions overall in 3 days. Most of the Developer is based on Android and Chrome operating System. So schedule for Google IO is here with some initial announcements few days ago.
In detail Google IO 2013 will cover Android, Chrome & Apps, Google+ and Google Cloud .Additionally Google will share some information on Maps — YouTube — Glass — Ads — Wallet — Knowledge & Structured Data and and other tech subjects.
On Day 1 there will be session on Android, Chrome and Apps, Google+, Google Cloud Platform, Google Maps and Youtube. Other minor sessions also include talks on Google Wallet and at the end there will be tech talk.
Day 2: Android Development and many more along with Chrome OS. On second day there will be also Google Ads sessions in which Googlers will tell about optimization and much more.
Day 3: On day three Google detail out its Google Cloud Platform along with Android and Chrome OS.
Source: Google IO 2013