"Microsoft Corp. on Tuesday unveiled its next Windows operating system, Windows 10, and gave a first look at an early technical preview for the PC available Oct. 1. The announcement highlighted advancements designed for business, including an updated user experience and enhanced security and management capabilities. The company also introduced the Windows Insider Program, kicking off its largest-ever open collaborative development effort to change the way Windows is built and delivered to best meet the needs of customers. Program participants will receive the technical preview of Windows 10 and a steady stream of builds through the development cycle to use and give feedback on."Microsoft unveils the future of Windows
Tuesday, September 30, 2014
Microsoft unveils the future of Windows [Microsoft News Center]
The next one will go to 11. The related press (e.g., Microsoft unveils 'spiritual successor' to Windows 7 by going to 10, Computerworld) seems to be more about the name than any new features.