I wouldn't count on that. A lot of people want to see new consoles or news of them at last year's E3, and there was nothing, not even an announcement of new PS3 and 360 models with some new hard ware. I hardly doubt that the Wii U will matter when it comes to another TES game. I understood that it was also originally supposed to be a Wii add-on, not a new console.
That being said, the current PS3 and 360 could be upgraded and released as new models with just a few tweaks to the hardware. It seems much more logical and cheaper than designing, manufacturing, and advertising new consoles.