It is final! Build 17763 is the RTM Build for Windows 10 October 2018 update aka Redstone 5 aka Version 1809. Although we are yet to listen from the horse’s mouth, there are some interesting leaks suggesting that this might be the RTM build Insiders were waiting for.
— Kingshuk 'Tito' De (@AndItsTito) September 25, 2018
If we go by the rumors, It was speculated that Microsoft could come up with the RTM build either in 21st or 22nd of September. Now, the below screenshot (Via) captured from the official ESD products.xml file also reveals the probable RTM date of October 2.
Assuming the documents to be authentic, there will be only cumulative builds in the Insider Fast or Slow ring and we will only see just a few bug fixing. As we are yet to hear from Microsoft, we shall see if there is a major announcement regarding the arrival of any new feature or UI change. The scenario is highly unlikely but yes it can happen. Windows 10 October 2018 update is all set to arrive in the next month.
You can read all the changes and new features that Windows 10 Redstone 5 brings with itself by clicking here in our massive categorized changelog.