Okay, so this post could be telling us more than we expect.
First of all, let's look at the post that was posted before that one:
We were just about write off the NX for another possible WiiU situation, but then Ideaman's post came.
But why?
I'd say because he's disagreeing with what has been said. He has some info and the general consensus contradicts that.
It's just three letters, how can you be sure he's disagreeing?
Well, he's not the most active gaffer, he posts rarely. If he were to agree, he had no obligation to post, since we came already this far without him, especially if he knows that he is one of the people we are expecting leaks from. Also, we know he likes Nintendo, so the whole speculation going into a negative direction despite his knowledge bugged him a little.
Okay, but why not outright say that what we were thinking is wrong?
If I had to guess, I'd say NDA's. We know for a fact that it's stricter than in 2012 a fellow member (I think Rösti ?) confirmed that. We don't know the details, but I can totally see Nintendo adding a clause that prohibits to even deny rumors. So I believe he would like to join in on the conversation, but can't due to the stricter regulations.
All right, but why did you took your time to analyze three letters?
Because I'm bored, and the buddy I was supposed to hit the gym with is running late, so I thought I could have a little fun.
/end overanalysis