Microsoft has begun the phaseout of 32-bit versions of Windows 10. OEMs are no longer being offered a 32-bit OS starting with Windows 10 version 2004, which is currently available for both OEMs and developers. Phasing out 32-bit versions of the OS will be a long process, and no longer offering that version to OEMs is the first step. However,

Source: Hot Hardware – Microsoft Takes Steps To Begin Windows 10 32-Bit Support Phaseout For New PCs