The Maril line's cry is not that different to the original, to be honest.
In fact, it only sounds a little bit different.
Otherwise, it's pretty much like its original cries.
BTW, the cries aren't the same as in the Stadium games, and in fact, many actually sound like they're used the old cries as a base for the new cries and just either distort them or make them sound more realistic.
3DS emulators may not exist, but emulators for the V generations do.
IE, if you try to migrate your Pokemon from Black, White, Black 2 or White 2 and it's hacked, it won't allow you to do so.
Also, apparently, Pokemon X and Y keeps its saves on the SD card slot.
And I've heard of that feature where if you use certain moves, you can gain items.
Not interested in that feature, though (and in fact, I didn't gain anything).
Incidently, Eevees are now capturable in the wild (and so is Farfetch'd).