Continuing to aggressively update its Kindle e-reading device, unveiled an updated model of its large-format Kindle DX reader with sharper image quality and a graphite covering for $379, a much lower price than the previous version of the Kindle DX. Amazon is also releasing a set of Kindle Web Widgets, a new embeddable web application for previewing Kindle titles in a web browser,

The new 9.7” screen Kindle DX will ship in July and features a new version of the device’s black & white e-ink display technology that Amazon claims will deliver a 50% sharper image with better contrast. Most importantly, the new Kindle DX has been reduced in price from $489 to $379, the latest price reduction in a highly competitive digital reading marketplace being driven by price cuts on devices as well as by the iPad’s full color display, high resolution screens and multimedia support.

Besides a new price and improved display technology, the new Kindle DX also features a graphite-colored surface. Other features like the native PDF reader and auto-landscape rotation remain the same from the previous version. Amazon’s new Kindle Web Widgets can be embedded on websites and blogs and are designed specifically for HTML5 and CSS3, new web standards that will allow readers to preview titles in their web browsers.