Sony has unveiled a third e-reader with wireless internet access to complement two devices announced earlier.

Sony's new Reader Daily Edition, priced at about $399 in the US, will have connectivity through AT&T's 3G mobile broadband network to Sony's ebook store, Sony said during a press conference in New York. Users will be able to purchase and download books, newspapers and magazines, with no monthly fees or charges for basic wireless connectivity, Sony said.

There's no word on a UK release for the Reader Daily Edition as yet, however, two other Sony e-readers are heading to our shores.

The Sony Reader Touch Edition has a 6-inch touchscreen and will cost £279 when it arrives in the UK on September 10. Meanwhile, the Reader Pocket Edition, a basic e-reader with a 5-inch screen, will cost £179.

"It's all about access to content ... it's about expression, holding, touching and using the Sony Reader," said Steve Haber, president of Sony's Digital Reading Business Division. "We want it to be a ubiquitous experience, not locked in - open, open, open."

Sony Reader Daily Edition The Daily Edition will have a 7-inch touch screen used for navigating and reading content, Sony said. In portrait mode, about 30 to 35 lines of text will visible, making the experience very similar to that of a printed paperback book. The e-reader will have 16 levels of grayscale resolution, and it will have an aluminum body, Sony said.

See also:

Sony Reader PRS-505 review

Amazon Kindle DX review