In a company blog post, Microsoft (NASDAQ:MSFT) today confirmed additional details about its upcoming software update to Windows 8.

According to the blog post, Microsoft executive Tami Reller spoke at a JPMorgan tech conference today, saying that the update will be called Windows 8.1. The version was previously known as "Windows Blue."

Windows 8.1 will be available as a free update to users of Windows 8, and the software will be distributed through the Windows Store. Reller noted that the company's goal will be to deliver continual updates to Microsoft's flagship operating system, and that Windows 8 is just the first phase that started last fall.

Microsoft added that it now has more than 70,000 apps available in the Windows Store, including high-profile titles like Twitter, eBay, and Netflix, among others. The company is planning to release a public preview of Windows 8.1 on June 26, during its Build developer conference.

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