Microsoft says it has now sold over 100 million Windows licenses so far, adding 40 million since January. The sales includes both upgrades and of new devices. Windows 8 was released to manufacturing on August 1 2012, and to the public on October 26, 2012.
While many have claimed Windows 8 to be a failure, 100 million licenses is around the same number of sales as Windows 7 had sold in the same time period. So they aren't really do any worse.
On the official Windows blog Tami Reller, Chief Marketing Officer and Chief Financial Officer said:
The PC is very much alive and increasingly mobile. The PC is also part of a much broader device market of tablets and PCs. Windows 8 was built to fully participate in this broader and increasingly mobile device market. The PC part of the market is rapidly evolving to include new convertible devices and amazing new touch laptops, and all-in-ones. These new PCs are hitting the market now and into the Back-to-School season, and they are more affordable than ever.
Reller also commented on the rumoured Windows Blue update:
Windows Blue is a codename for an update that will be available later this year, building on the bold vision set forward with Windows 8 to deliver the next generation of tablets and PCs. It will deliver the latest new innovations across an increasingly broad array of form factors of all sizes, display, battery life and performance, while creating new opportunities for our ecosystem. It will provide more options for businesses, and give consumers more options for work and play. The Windows Blue update is also an opportunity for us to respond to the customer feedback that we’ve been closely listening to since the launch of Windows 8 and Windows RT. From a company-wide perspective, Windows Blue is part of a broader effort to advance our devices and services for Microsoft.