With Google I/O 2015 starting shortly, here is what I most hope to see:

• Android M announcement with news and Nexus 6 download images
• New Chromecast hardware and updates
• Android wear news and updates
• ChromeOS updates

The keynote is scheduled to last 2.5 hours, so there should be much more news. Be sure to livestream the event from the dedicate I/O website: https://events.google.com/io2015/