> IBM do have a habit of being a little vague about this sort of thing.
> [...] Probably the same thing here

IBM tweed from September 16th:
"The Wii U is a custom 45nm #power7 chip. Same SOI design in #ibmwatson"

IBM tweed from September 20th:
"Pardon the error. It's a custom chip built on Power Architecture base"

I wouldn't call this "a little vague", but rather spreading false information and then posting a correction and apology later. Sincerely, I hope that such is *not* IBM's habit (spreading false information in the first place that is). To me that's a quite remarkable incident, as they started this POWER7 nonsense talk right when the Wii U was announced in mid-2011 and were subsequently questioned ad nauseam about further details on the chip and only 1.5 years after the announcement bothered to come forward with a correction.