Amazon.com Inc is set to release a higher-end Kindle version with a rechargeable protective case for a better battery life, the Wall Street Journal reported on Tuesday, citing a person familiar with the matter.
The online retailer is also developing a solar-charged Kindle case, the Journal reported, citing another source.
Amazon declined to comment.
The company`s chief executive tweeted on Monday that the latest version of the reading device is ready and details could be expected next week.
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