Our cross-platform apps Survey123 and QuickCapture are available for Windows and new functionality is being added to them with each release. Collector Classic and ArcGIS Explorer are still supported. Also please look for new GPS capabilities coming in ArcGIS Pro 2.7 at the end of this year.
With that said, we are not actively developing new, native mobile applications on the Windows 10 platform at this time. There is no development planned for ArcGIS Field Maps on the Windows 10 platform. If you are in need of Field Maps on Windows 10, please contact your account manager so that we can gather this information. Thanks!