Microsoft is alerting users in the Windows Insider Program with unsupported PC specs that they can no longer test Windows 11.

“Your PC does not meet the minimum hardware requirements for Windows 11,” a new message in Windows Update explains to impacted users. “Your device is not eligible to join the Windows Insider Program on Windows 11. Please install Windows 10 to participate in the Windows Insider Program in the Release Preview Channel.”

This seems to fly in the face of Microsoft’s previous communications. Yes, the software giant did say back in June that unsupported PCs would be allowed to test Windows 11 until the final release and would then have to switch back to Windows 10 manually. But last week, Microsoft said that those with unsupported PCs had two paths forward: They could stay in the Insider Program or, when available, manually upgrade to Windows 11 using a publicly-available ISO. (The ensuing controversy over a related miscommunication is sort of beside the point.)

This is perhaps a hint that Windows 11 “1.0” development is winding down. After all, Microsoft will need to finalize the initial version of this platform in time for PC makers to preload it on hardware and ship it to retailers for the October 5 launch. That process most likely takes several weeks.