Just got 8 of my 12 delivered from Amazon. The other three come on Monday (Link, Samus, and Marth). Not sure why they took longer to fulfill, but I knew it at the time of order.
Any ideas when they will work in MK8 and Hyrule Warriors? I know in MK8, there is a place in the menu for it, but not sure if it's active yet.
Not sure about MK8, but the patch for amiibo compatibility in Hyrule Warriors comes out on Thursday.