The Xbox One's March update is so last month, those enrolled in the update preview program are already being invited to test the latest batch of upcoming tweaks. Version 1404, the April update, or whatever else you'd like to call it, will be rolling out over the next couple of days, with features and fixes being implemented piecemeal. Nevertheless, we know the full intentions of the next update, which will bring back friend sign-in notifications, make it clear who on your buddy list is engaged in multiplayer action, and allow you to check their favorite apps. A 'saving game' progress bar will be added, as well as flags that show what games/apps are being updated or have been recently. Beyond that, there's another fix for the European 50Hz media playback problem, this time for Blu-rays, and improvements to voice and motion controls, game recording quality and compatibility with A/V gear under the One's control, like TVs and set-top boxes. Most of us will have to wait until the update is properly tested, remember, but take comfort in the knowledge it's on the way.
Update: Major Nelson has also posted the list of changes to expect, check them out after the break.