Google I/O, the annual conference held by Google which typically focuses on developers but the keynote on the first day is used by Google to announce and present services and/or products it is launching to the public.
The Google I/O 2013 Keynote can be viewed live at https://developers.google.com/events/io/
Google I/O 2013 announcements are being live posted at https://plus.google.com/+GoogleDevelopers/posts
Other liveblogs:
- Ars Technica : http://live.arstechnica.com/liveblog-google-io-2013-keynote/
- Wired: http://www.wired.com/gadgetlab/2013/05/google-io-2013-liveblog/
- Engadget: http://www.engadget.com/2013/05/15/live-from-google-i-os-2013-opening-keynote/
- GigaOM : http://gigaom.com/2013/05/15/live-blog-google-io-2013/