The app, flagged up by Microsoft engineer Mohamed Mansour in a Google+ post on Tuesday, makes it possible for users to search through Google's engine without needing to fire up a browser. It also provides a quick link to Google services including Gmail, Drive, YouTube, Reader, Maps and Calendar.
Google has also put voice control into the app — in Mansour's words, Google Now is "baked in", giving Windows 8 devices some of the same functionality as that on Android 'Jelly Bean' 4.1 smartphones and tablets.
This seems to be a collaboration more in service to customers than the companies involved. Of course, they still both benefit, but it's good to see.