I don't think so. Nintendo's been pretty shitty about letting consumers know about different things lately. Look at the confusion from the 3DS at launch, people not realizing it's a new system... Nintendo obviously didn't learn from that, keeping the Wii U name as it is for the brand recognition and again ignoring the obvious confusion that it'll cause many consumers.Ensue IMMENSE marketing campaign so that people are actually aware it's a totally different console and not the Wii+ (and Nintendo are amazing at advertising, far better than the craptacular Sony). Soon enough the logo won't really matter, although it is a pretty poor choice for a NEW console.
I mean the original Wii's been out for over 5 years, and the "gamer" base has grown largely since then. For many consumers the current generation of consoles and handhelds is all they've seen, which is partially the issue when the 3DS came out. The concept of a new handheld that plays new games was foreign to people, and having a name directly based off of the old one with a minor change (when there were already known hardware revisions across the board) simply didn't do enough to get the concept of "NEW SHIT" into people's heads.
What I think ultimately lead to this decision is the the amount of 3DS units sold lately, Nintendo has realized that sales due to brand recognition is greater than the potential loss you get by confusing the mainstream consumers.
I remember reading a comment Iwata made about this stating that they aim for changing the brand reputation rather than the brand itself, a hard but achievable task that in the end could result in bigger profits. In the same article he further mentions that they are aiming at the core market since it's more reliable than the casual one.
What I think he's trying to say is that Nintendo will, with some time on the market, be able to cater to the core audience with the Wii U name and at the same time get sales boosts for keeping the widely recognizable Wii brand.
He seems pretty confident about this despite how he personally thinks that the Wii failed to be the "everyone" system he wanted, admitting that many Nintendo gamers usually have other systems at home too in order to meet their gaming "needs" and "standards". Hopefully he delivers what he has promised and corrects the errors they've made with the Wii, like hardware and online for example.
Nintendo really needs to prove themselves this E3 in order to succeed with hardware sales this holiday.