In the flavor text for the Clockworks in Bestiary 3 (page 53), in the final paragraph it talks about rumors of merging steam power and magic to create especially powerful clockworks. However, no such "steam-clockwork" is presented, nor is there a "steam-powered" template or anything remotely like that.
So...my question is: Is this referencing something already in print (maybe a creature in one of the Campaign Setting books?)? Or might they be hinting at something in the future? Or mayhaps they're just blue-balling us with potential, unfulfilled promises.
-Chris
There's nothing I know of in the works.
Although I do recall reading about one of the campaign settings books will cover an ancient empire that used constructs...