Recall it was in February (seems ages ago!) when Esri’s Andrew Turner (@ajturner) lifted the lid off the Esri Open Data initiative, and effort to help Governments meet their mandate to be more transparent and serve the public with more open data – enter ArcGIS Open Data. I’m a huge fan of such efforts, mainly as they support Governent’s true mandate of serving the public and acting as the platform for innovation!
See more in this blog post from Esri
For all the deets direct from Esri see this resource devoted to ArcGIS Open data