Wait, I see a pattern:
USB 1: Full Speed
USB 2: Hi Speed
USB 3: Super Speed
...
USB 4: Ridiculous speed?
I have been wondering about the very same thing. My guess for 4 is Hyper but no idea for 5.
Oh wait, this isn't a serious discussion.

I thought it was! We were trying to be innovative

I reckon Mega speed for USB 4, Awesome speed for 5 & OMG! speed for 6
