The Question of Little Blue Men

I really like the new Wolverine and the X-Men comic series from Marvel.
But what is up with the Bamfs?
Where did these little blue guys come from?

Mystical spawn of Kurt Wagner aka Nightcrawler?
Or invading Nac Mac Feegle (Wee Free Men) from Terry Pratchett's Discworld?
I'm sure I don't know, but maybe the writers at Marvel will let us know soon?