Some very nice BS by Ubisoft there.. lol. Here's what I think will happen: They'll announce the new consoles, within the next year. Ubisoft will suddenly change their tune, in the interest of "giving the gamer the best experience", scrap the X360/PS3 versions, and release it for next-gen.
Developers in general don't like having to make two completely different versions of a game. It's one thing to build it on a platform and then port it over to another system (that's what we've been getting for the last five years or so). But I don't think that's going to work with this game. There's way too much going on in those scenes for the current-gen consoles to handle, and I don't think they can simply "dumb it down" for the consoles.
Look at it this way.. there's plenty of games out there that are ported back and forth to PC, X360, and PS3. The PC version is generally superior because of the extra processing and graphics horsepower. But look closely at what's "better" about it. Higher resolution, increased framerate, better AA, maybe higher-res textures or something like tesselation thrown in. But on the whole, it's pretty much the same.. it's the same stuff going on under the hood, the PC is simply doing it better. Better, but not different.
In Watch Dogs, there's things going on that the current-gen consoles simply cannot do at all. Especially in the last section, the parts in the rain. That's some next-level **** right there.
On the whole, I think it's a good sign. Developers are starting to get tired of developing for eight-year old hardware, and they're pushing the limits, showing the hardware makers that they're ready for the next thing.