Microsoft has stated that future versions of Windows 10, starting with the May 2020 Update, will no longer be available as 32-bit builds on new OEM computers. The Steam Hardware & Software Survey: April 2020 shows that it is in limited use. Microsoft states that they will are still committed to supporting users running older hardware. Microsoft will continue to offer feature updates and security updates for versions of versions of the Windows 10 running on older hardware that are manufactured with earlier versions. The change does not mean that Microsoft is no longer supporting 32-bits builds, as they will continue in a limited manner.
Source: https://www.bleepingcomputer.com/news/microsoft/rip-microsoft-to-drop-support-for-windows-10-on-32-bit-systems/