MLP News posted 4 of the 6 Funko Pop! Figures. They are Rainbow Dash, unicorn Twilight, Pinkie Pie and Fluttershy. Derpy and DJ P0N-3 are the other two figures.
Pop! is a specific line of collectible figures Funko produces. They all have large, squareish heads, solid black eyes and small bodies. They’re almost always a licensed IP such as Game of Thrones, Marvel/DC etc. They tend to be $10 each and can be bought in stores such as Barnes and Noble and collectible stores.
MLP News reports that they are currently up for preorder on ToyQiz for $10 each with shipment within the month.
Here’s the other 2 thanks to EqD: