Windows 10 October update release may coincide with the Surface event
Microsoft is currently working on its next major update to Windows 10. The relevant leaks have indicated that it will be known as version 1809 of the OS, and has currently reached build 17763. The latest rumors suggest that it will be available as early as October 2, 2018.
This date is also associated with the next Surface Event, in which Microsoft will unveil its latest notebook-like software. They are likely to include a new Surface laptop and (possibly) a tablet with USB type C. Some new features and services may also be showcased at the expo.
Then again, Windows 10 1809 may not make it to this event after all. Microsoft did miss its release target for a previous update by several days in April. In addition, the new update, which is currently code-named Redstone 5 and is still in preview, is also only very recently reported as being at the Release To Manufacturing or RTM stage. The Windows 10 October update is also supposed to bring improvements to Hololens and Windows Mixed Reality. This seems a lot to be absolutely sure of being general user-ready in approximately 6 days from now.