Sony has released a handful of images of the PlayStation 4's user interface for your viewing pleasure. As you can see in the image above, it looks like Sony has borrowed the horizontal panel style from the Xbox 360 dashboard. However, unlike Microsoft's current UI, Sony's interface appears to be incredibly simple and clean. Let's just hope it stays that way.
During the PS4 event, Sony mentioned that you'll be able to access the PlayStation Network on a number of other devices including tablets and smartphones. Here's a glimpse at what that will look like on a tablet:
And a smartphone: