Opensource.com has an excellent retrospective article describing internationally signficant events affecting the FOSS (Free and Open Source Software) world last year. It mentioned a number of fascinating developments. The most profound, in my opinion, is the UK's mandate to use open standards for communication with and information dissemination by the government there. The ripples are only just starting to hit our shores.
For those wondering about the uptake of FOSS over the past year, Glyn Moody has published a comprehesive list describing just how prevalent FOSS is worldwide (hint, it's prevalent).