Certainly looks more modern than the old Microsoft logo, but I like logos’ with history so I still prefer the old one.
Interesting points to note: this is very similar to the old WIndows logo (the white bars separating the colours used to be part of a window frame separating 4 panes of glass; now the panes of glass apparently represent the company’s portfolio of products). This is also very similar to several Google logos – nobody can accuse Microsoft of copying, since they used the four colours well before Google even existed, but this was an opportunity for Microsoft to differentiate themselves more from Google, not less.
Still, there are many worse logos:
http://www.google.co.uk/search?num=10&hl=en&safe=off&site=imghp&a…