Another prototype (ish) pony

Via: Whellu  on The Arena

Prototypes/unknowns

Via: Strawberry Reef  on the Arena

Concept Art

Via: The entire internet, From Lauren Faust's Deviant Art page.

Cupcake/Sugarcup

Via: The Arena

Official Art

Tropical_Sunset over o the Arena has put together and shared a very nice collection of official artwork.

More rereleases

Via: Mlpnews and the Arena.

On ponies I haven't even seen the first releases in stores yet!

Babeh ponies and Cheerilee

Via: Mlpnews

Brazilian McDonald's Ponies

Via: the Arena. McDonalds.