My predictions for a revision is either the same battery capacity or larger. Sleeker and thinner with the colors white, black, light blue, orange and yellow. Maybe red. I think the entire console will have the same color, not just the joycons. If the joycon revision with a dpad hasn't already been released I think it will be with the new switch revision. The dock will be much much smaller, it'll look like one of the 3rd party mini docks and if I have to guess I think it'll sit tilted like in the vita cradle. I can't make up my mind about the handstraps and if the revision will be using them at all. Will the joycons already be re-designed to be good enough without them? Maybe it'll ship with those 3rd party mini grips shaped like a real controller instead. Screen will still be IPS. Higher res? I would have to say the revision will be more powerful with a 1080 screen. Oh, and of course more memory. Let's say 64gb. And Bluetooth.
If I'm right that it comes with a dock I don't think it'll be called the switch mini but I'm absolutely positive we'll see a handheld only version now or later in the cycle.
I just wrote some dumb line on a forum years ago like a month before the Wii U reveal where I basically wrote "It'll be called the Wii You." Doubt I'll make such a prediction again. I'll just write something stupid again like "Super Switch."
Final prediction. The "SwitchWatch". Wear it and it'll communicate with your switch. Just cause it's DUMB.