The newest version of Sony's Digital Book e-reader, the Daily Edition, offers a 3G wireless connection and a 7-inch touchscreen. The $399 model will be available in December.
In addition to the Daily Edition, Sony has also introduced the Touch Edition, with a 6-inch screen and a suggested retail price of $299, and the Pocket Edition, with a 5-inch screen, and a suggested price of $199. These models are already available.
The devices use an updated version of Sony's software, eBook Library version 3.0, which adds Mac compatibility. The software can read .PDF files, Microsoft Word files, and files in several other common formats.
The models will be available at over 8,000 retail locations including J&R, Best Buy, Staples, Walmart, and Datavision.
Amazon and Barnes & Noble boast larger digital libraries than Sony: The Kindle counts a library of more than 330,000 digital works while Barnes & Noble's e-book store has 700,000 titles (that number includes many older books in the public domain).
Sony, meanwhile, offers around 200,000 books of its own, but has recently struck a partnership with Google to provide its e-reader users with access to more than 1 million free, digitized public domain works. Sony is also teaming up with libraries to offer still more free books to its users. For example, the New York Public Library will begin offering over 40,000 titles for free to those with Sony e-readers.