Windows 8 will go on sale on Oct. 26, says Microsoft. This software upgrade is designed to work better with touch screens and tablet computers. The news of the sale was announced by Microsoft on a blog.

The software giant will be releasing Windows 8 software as a downloadable upgrade the same day of its sale for PC owners and would start selling computers with the same software the same day as well, said Brandon LeBlanc, spokesman for Microsoft. The Windows upgrade will cost $40 for Windows XP, Vista or 7 users. Which is priced much less than all the previous upgrades by Microsoft Corp.

However, people who bought computers with Windows 7 on June 2 or later will be able to upgrade to Windows 8 for $15. Also all users who upgrade to Windows 8 will receive the more advanced Windows 8 Pro.

Microsoft's last operating system upgrade was with Windows 7, launched back on Oct. 22, 2009 and now after such a long wait the new operating system is ready to hit the stores in the next three months. This being the company's most critical software upgrade in a decade.