The latest version of Amazon's Kindle DX is fitted with a new screen that provides higher contrast. The device still uses e-ink technology.

The price of the Kindle DX has been cut from $US489 to $US379. This applies to the current 'second generation' model as well as the 'latest generation' with the improved screen, which is scheduled to ship in the US on July 7. International availability of the latest model has yet to be announced - the international product page still appears to reference the second generation DX.

"There's no turning back once you read on our beautiful new Kindle DX screen," said Steve Kessel, senior vice president, Amazon Kindle.

"With 50 percent better contrast and darker fonts, you'll find it easier than ever to read wherever you happen to be, whether it's outside in bright sunlight or under the low light of your living room," he added.

Amazon recently announced a Kindle app for the Android platform, added embedded audio and video support to the Kindle app for iPad/iPhone/iPod touch, and cut the price of the original Kindle from $US259 to $US189.

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Earlier this week, the company announced the availability of a 70% royalty option for publishers using the Kindle Digital Text Platform. Under this scheme, publishers receive 70% of the list price of Kindle books sold, less delivery costs (said to be less than $US0.06 for a median sized book).

This option appears to be aimed at maximising the regional availability of ebooks at relatively low prices. Conditions include a maximum price of $US9.99, the list price must be at least 20% below the lowest list price for the physical book, the title must be made available in all geographies where the publisher has rights, and the price must be equal or less than that applying to other formats.