I have a theory concerning all these mini Nightcrawlers we've been seeing on future cover solicitations of WOLVERINE & THE X-MEN (specifically the covers of issues 1 and 3).
Firstly, I'm well aware of Chris Bachalo's tendency to draw little amphibian creatures and vegetation all over his pages, but I think something more is going on with these little guys then first meets the eye.
My guess is Beast (and maybe whatever other scientific mind that joins him in the Jean Grey School for Higher Learning) clones the elf's DNA but reproduces him (and probably not perfectly) in mini forms to create a genetically engineered transportation system for the team! Think teleporting mascots!
So if this does indeed go down, you know where you heard it first!