Watch Dogs is apparently being developed for next-gen consoles and PC before PS3, Xbox 360 and Wii U.
“Previously, we developed first games on the Xbox 360 and which were then translated into the PS3. It took a lot of time and money to make that port. Now we develop from the PC and which versions are translated into a console like the PlayStation 4.”
It was previously stated that the Watch Dogs experience would be kept similar across the various platforms.