Unconfirmed rumors say Overlord Butterscotch, the firebreathing clockwork pony will appear in TW3. Here's a vid:
http://www.youtube.com/watch?v=XNs4G2rKGOE&feature=player_embedded

I hope so, hate ponies...had a bad experience with one as a child. Horrid beasts, can't be trusted.

Wonder what a Witcher could harvest from a clockwork pony?