Announcing the new pricing structure for Windows 8, Microsoft reiterated that the promotional offer will definitely cease to exist on January 31 and that users have just a few days left to upgrade to Windows 8 if they want to avail the discount. “…remind you to take advantage of the great upgrade offer which lasts until January 31st 2013”, read the Microsoft blog post.

From February 1 new pricing will be in place whereby users will have to shell out $119.99 for Windows 8 upgrade from previous Windows home/consumer SKUs and $199.99 for Windows 8 Pro upgrade. Further, the Windows 8 Pro Pack will cost $99.99 while the Windows 8 Media Center Pack will cost $9.99.

Microsoft also confirmed earlier in this week that previous preview builds of Windows 8 like the Developer Preview, Consumer Preview and Release Preview will all expire this week and users will notice the operating system restarting every hour after the expiry until they install a RTM version of Windows 8.