Should an updated Mac Mini appear anytime soon, I hope it will have at least Intel Iris Pro graphics on the upgraded quadcore i7 version, with the same user-repairable form factor it currently has.
I'm afraid though it hasn't been updated yet because Jony Ive looked at a coffe cup last week and wondered if he could fit a Mac Mini in there.
My prediction therefore is that in the spring of 2014 we'll get a brand new, completely redesigned Mac Mini the size of a coffee cup, with a dual core i5 processor with HD5000 graphics, a non-upgradable 128GB SSD and soldered 4GB RAM for the revolutionary price of $699.
Of course I'd love for Apple to prove me wrong.