I could have sworn we had a topic on this, but I can't seem to find it (will try a Google search of the site later, might be buried in another discussion). Anywho, in the following article, Franz all but confirms there will be a Tesla Pickup:
Tesla’s electric 3-series rival ‘on sale in 2015’ | Autocar
Tesla’s electric 3-series rival ‘on sale in 2015’ | Autocar
“There are lots of ways in which we can exploit the platform,” said Von Holzhausen. “There will be a time and place for us to develop something around a pick-up. That’s a market for which the torque of an electric motor would be ideally suited.”