"Microsoft is planning an event in San Francisco later this month to show off its early work on the next version of Windows, code-named Threshold.Microsoft Will Offer Early Look at Next Windows on Sept. 30 | Re/code
The Sept. 30 event, which will be led by Windows executives Terry Myerson and Joe Belfiore, will talk about where Microsoft is investing and show off some of the features of the new operating system. The company also has early code it will make available, according to sources, but the test code is intended mainly for developers and businesses to begin their preparations."
Tuesday, September 16, 2014
Microsoft Will Offer Early Look at Next Windows on Sept. 30 | Re/code
I have a hunch Threshold will not follow a business-as-usual Windows dev/test/release cycle; e.g., I wouldn't be surprised to see it released for new PCs within the next month or two