Looks like Microsoft China not only confirmed that the software giant's next operating system is indeed called Windows 9 but also leaked the Windows 9 logo. The information was published by Microsoft China on Chinese blogging website Weibo with the message "Microsoft's latest OS Windows 9 is coming soon, do you think the start menu at the left bottom will make a come back?".
The post was quickly removed as someone likely realized this information wasn't meant to be public just yet. The official announcement regarding Windows 9 is expected on September 30th and a public Technology Preview should be available shortly afterwards.