https://www.theregister.co.uk/2019/08/20/microsoft_windows_19h2_insider/

Windows Insiders were seeing double last night as Microsoft once again pushed out not one but two builds of October's Windows 10.

The 19H2 builds were again targeting the Slow Ring and continued the company's determination to confuse the heck out of its loyal army of unpaid testers with one that contains new toys and one that does not.