Eyesore
These are an utter eyesore, but let's face it until Win7 Microsoft never really seemed to worry about how things looked.
With regards to the comments on needing always on internet connections, a lot of people already have these. Pretty much every iPhone for a start. Although I'm curious to see if you'll get an iPhone App. I don't own an iPhone, don't intend to, and can't be bothered to look to see if there is one. But people do have always on internet connections, and each day it seems more and more are getting them.
QR codes are not just for mundane uses, and are getting more popular each day. I've seen them on t-shirts worn by band members playing gigs, translating to slogons not repeatable in polite company. I've seen them used in museums and art galleries linking through from exhibits to web pages going into more detail with images and videos. It may be "the next big thing" it may be a passing fad. But either way, a QR code is not ugly, a certain beer company's adverts at the moment look heavily influenced by them.
The Microsoft ones though? A real eyesore.