Im not convinced by it. In their official blog they said that the colored squares are meant to represent the company's diverse portfolio of products (Windows - Blue, Office - Red, xBox - Green, Yellow - Bing...?) but as it stands, with their choice of colors and the way the squares are aligned, it looks way too similar to the previous Windows logo. In that sense the current logo actually goes against the idea of showcasing the various products the company offers and instead reinforces a single product: Windows.