Sales of Windows 8 struggled out of the gate, but 90 days since its October launch, Microsoft has indicated it's moving enough new operating system licenses to equal that of Windows 7 From Techradar:

More than 60 million licenses sold is on par with the record setting pace we saw with Windows 7, said Microsoft Chief Marketing Officer and Chief Financial Officer Tami Reller in an official Windows blog interview.That figure has been aided by a Windows 8 Pro upgrade discount for US$39.99, a deal that expired on Feb. 1. The new price is US$199.99.Microsoft has also given Windows XP holdouts a chance to upgrade, skipping over Windows Vista and Windows 7.

 Windows 8 sales are 'on par' with Windows 7 90 days in