It isn't even officially released in my country yet (UK) and I saw like 20 people clustered around the 2 gyms located near me earlier today looking at their phones lawl. It's such a phenomenon. I love it.
My prediction threads:
Wii U will sell under 40m units (made on 14th September 2012)
PS Vita will sell under 20m units (made on 30th September 2012)
Wii U will sell under 7m in 2013 - I was right