At the Tools of Change conference, Google's Amanda Edmonds announced the launch of Google Editions by June 2010. In the service, e-books will be able to be accessed using a Web browser. Using Google Editions, customers will be able to purchase e-books from either Google, selected retailers, or publishers.
Read more about it at "Google Editions Ebook Platform to Challenge Amazon Kindle," "Google Plans 'Buy Anywhere, Read Anywhere' Offer," and "Google Takes on Amazon with Online E-Book Store."