Indicative Roadmap for Windows 9, the next update after Blue.

Windows 9 Beta (7 January 2014)
Windows 9 Release Candidate (July 2014)
Build 2014: Windows 9 RTM (October 2014)
November 2014: Windows Release 9

Testers have got build 9319.0.130208-1820 from Winmain / FBL_EEAP branch