It sounds like people were reading too much into the logos leading up to today -- the birthday of H.G. Wells. For the past couple weeks, Google had been showing off some unidentified Google logos that raised much speculation.
Lots of people, including myself, were hoping that these logos somehow would lead up to a product launch of some kind -- but instead, it was a case of Occam's razor. The simplest answer was the correct one.
Today is the birthday of H.G. Wells, and to celebrate, Google gives us the final doodle in the series.