The next Xbox One update preview is already live for beta program participants, just two weeks after the last major update rolled out to the public. The 1404 update (also known as the April update) will most notably continue to improve upon the friends list, adding notifications that will appear when your friends and favorites log in to Xbox Live. You will also be able to see if they are playing a multiplayer match and a list of their most popular apps.
Other improvements include a progress bar on your game saves to show you how recently the game or app has been updated, higher video quality for game DVR recordings, updates to device management for TVs and set-top boxes and even more refinements for Kinect. According to a post on NeoGAF, this preview will reportedly last longer than the March preview, so expect a slightly longer delay before you can get your hands on the April update.