However, as per Facebook's description, the app also supports notifications and includes live tile integration to flag up waiting messages.
In addition users will be able send photos, videos, GIFs, as well as use stickers. The app will indicate when a recipient has seen the message. It also features groups and search.
The app isn't yet available for download but at least Facebook has now posted official screenshots of what the app looks like when it does arrive.
Facebook toldVenture Beat that it has been testing the Windows 10 app with a "small percentage of people in a few countries".
ZDNet has asked Facebook when the app will actually be ready to install and whether a Windows 10 mobile app is also in the works, but has yet to receive a response. The current Messenger for Windows mobile does support Windows 10 mobile but it's fairly dated.
A new Messenger app for Windows 10 mobile devices may not be unrealistic, given Facebook's launch this week of the Instagram beta for Windows 10 mobile devices.