Microsoft releases .NET Framework 4.8.1 to Windows Insiders in the Release Preview Channel
The new .NET Framework 4.8.1 is available for Release Preview Insiders for Windows 11, version 21H2 (original release), Windows 10, version 21H2 (LTSC), and Windows 10, version 22H2.
Preview Program Windows Insider Program Release Preview Custom Datagridview Windows Update Microsoft Update Catalog
Source: neowin.net