This paper extends the Dincer and Eichengreen (2007) index of central bank transparency. Improvements in transparency are notable in Central and Eastern Europe, while the index has shown much smaller rises in most other parts of the world. The pattern observed by Dincer and Eichengreen, consistent with a permanent increase in central bank transparency, is also evident in the updated results. The dramatic enhancements in central bank transparency reported earlier appear to be a feature of the late 1990s and early 2000s. Whether the subsequent data reflects limits to central banks transparency or, to some extent, transparency ‘fatigue’, is unclear.