Four Nightmare Night Friendship is Magic collection are now available on Amazon. These four seem to be the head of the flood, with the rest releasing as the year goes on. Unfortunately it looks like the prices are pretty heavily scaled up due to the tiny amount of stock, so it would probably be in your best interest to wait, unless you can't live without Derpy here.
Go get images and links for them below!
My Little Pony Friendship Is Magic Collection Muffin Pony
My Little Pony Friendship Is Magic Collection Rainbow Dash
My Little Pony Friendship Is Magic Collection Princess Luna
My Little Pony Friendship Is Magic Collection Mayor Mare
