It has been rumored that Microsoft is working on Windows 10 Threshold 2 and it may be arriving in the first week of  November. We later got a date of November 10 on Patch Tuesday for the update to roll out as per a Microsoft support Engineer.
If you don’t know, Windows 10 Threshold 2 or Windows 10 (Fall update) will bring performance improvements, bug fixes and many new features like new messaging app and Cortana support for more regions.
Now itHome reports that today Microsoft has signed off Windows 10 Threshold 2 and it is reportedly coming soon. While there is no information of which build is TH2 update candidate, latest known build number is 10586, according to the Buildfeed.