The Consumer Electronics Association broke the news to PC World that the report initially had Nintendo down as an attendee, but that was a mistake. Nintendo will not have any representatives on the show floor at CES.
To be honest, we were a bit surprised when we heard that Nintendo were planning to attend, considering they hadn't been there in 16 years, but at the same time it made sense. Nintendo's main competitors now arguably exist in the tech space, especially with regards to handhelds, and with the 3DS coming early next year you'd think they'd want to push the tech angle of the device. We're sure that 3D handsets will be present at CES this year, so that would be another reason for pushing the 3DS at CES.
But sadly, it's not to be. Nintendo, as per usual, seem to be marching to the beat of their own drum.