Looking for a quick peek into the major changes that were revealed yesterday during Microsoft’s Build Keynote address?

Well Joe Belfiore, the Corporate Vice President of Microsoft Windows Division, created two videos for just that reason.

The first one highlights all the interface related changes in the Windows 8.1 Update that will be available to all Windows 8.1 users on 08 April 2014 (April’s Patch Tuesday).

The second video runs a little longer than the one above, just over 16 minutes, and details the updates we should expect in Windows Phone 8.1 when it is released. The biggest part of this video is the portion which demos the new personal digital assistant Cortana.