So this thing:
Not overly happy with the single Ice Climber if it is real but I highly doubt it is real.
I highly doubt this is real. Everybody else pretty much said everything that I was going to say earlier, though. Wolf's model is his Smash 3 model, Mewtwo's model is really blocky, especially the tail, and Nana is referred to as Popo's sister, when, in reality, their relationship is deliberately left ambiguous. Sakurai wouldn't let his own opinion slip out so obviously like that.
Also, I'm not sure, but I think Mewtwo's model might be his original Smash 3 model, and Popo's model might be his Smash 3 model, as well.
All of that said, though, I wouldn't mind seeing Popo going solo as DLC in this game, provided he has Nana as an Alt. I actually think it'd be really cool. I mean, yes, he loses what made him unique in the process, but solo Popo is better than no Popo, right? In any event, if this were to happen, it would most likely make the Ice Climbers higher priority in Smash 5, as well, so I don't see a reason not to make solo Popo DLC. Especially when the only thing preventing the Ice Climbers from returning was technical limitations.