Microsoft is beginning what will be a very long and drawn-out process of no longer supporting 32-bit versions of Windows 10. Beginning with Windows 10 version 2004, which is already available to OEMs and developers, the company is no longer offering a 32-bit version of the OS to OEMs for new PCs. The change is indicated on the Minimum Hardware Requirements documentation.
Hardly surprising. We’re well past the point where new machines need 32bit Windows.