What's in a logo? These days, it's everything -- it's one of the most recognizable symbols a company can have, and it appears Microsoft isn't taking its emblems lightly. Over the course of the past week we've noticed an interesting trend: the Windows Phone branding has shed the circle-based icon in exchange for a square-shaped variant, appropriately reflecting the platform's "tile" look and minimalist theme. We first thought this was a fluke when we peered at the new logo at Fujitsu's