Guys, I'm playing through my 2nd playthrough of Y (Thanks to bank.) and I've just met these two.
They mention that Prof.Sycamore gave them pokemon two years ago.
That got me thinking about the whole 3 more kalos games this gen theory; I think these two might be the male and female trainers that we'll play as in x2/y2.

Just a thought, I think it would be neat