Previously the app was only available preloaded on Alexa is now available from the Windows 10 store., but
The Wake on Voice feature is still only available on “supported devices” but users can set up keyboard shortcuts or click on the Alexa button within the app. Unusually, the minimum specs don’t include a microphone, just a mouse and keyboard.
It’s worth noting that there is one review on the app at the moment reporting that this version of Alexa can’t install skills or access smart home features, so users should keep their expectations low.
The new app is part of an attempt to get PCs and Alexa to work better together. In August, Microsoft announced that it’s now possible to, a feature which works with the Xbox One game console.