Windows 8.1 standard and Pro prices. Ready in October 18th.

WorldWide Tech & Science. Francisco De Jesùs.

Windows 8.1 standard and Pro prices. Ready in October 18th.

Windows 8.1 will be offered as a free download to Windows 8 users.

Windows 8.1 will be available for $119.99 (€90), while the Pro version will be sold for $199.99 (€150) in the United States. Pricing might vary by market, the company said.

Windows 7 users who'll want to make the move to Windows 8.1 will be able to do so by using the built-in upgrade option, which will bring along all their files, but they'll have to reinstall all desktop apps.

Windows XP and Vista users, on the other hand, will lose all their files, settings, and programs.

Customers who purchase a device running Windows 8.1 will be allowed to migrate to the Pro version for only $99.99 (€75), while the Media Center upgrade will be available for only $9.99 (€7.5).

Those who wish to buy the operating system separately can do so by paying for either a traditional packaged DVD product or a download from Microsoft's website.

Windows 8.1 is projected to be unveiled on October 18.