It is a big deal and may also signal a thaw between Google and Microsoft after lots of bad blood in past. An official YouTube app from Google has appeared in the Microsoft store and as per the source ALumia it is an UWP app.
Windows.Universal 🙃
— Aggiornamenti Lumia (@ALumia_Italia) October 1, 2020
Unexpected pic.twitter.com/zGFsF8Fwv9
— Aggiornamenti Lumia (@ALumia_Italia) October 1, 2020
Google has in past stopped Microsoft from bringing a functioning YouTube app to Windows. So, probably with Microsoft warming up to Google’s ecosystem with its apps and Surface Duo may have a soothing impact on Google.
Still, it would be interesting to see whether it is a full-functionality app or a wrapper for the YouTube website.