Yahoo launched a new logo this year. I was interested that according to this website Yahoo chief marketing officer Kathy Savitt described the purple as whimsical saying “We wanted a logo that stayed true to our roots (whimsical, purple, with an exclamation point) yet embraced the evolution of our products.” Interesting.
I then found a really interesting website that is all about logos called logopedia. Well worth looking at. To build excitement towards the launch of the 2013 Yahoo logo, they released about 30 variations of the theme in the weeks leading up to the official release.