The word leaked out last week from the Developer Summit agenda and now ESRI has a webpage posted with the latest info on their latest API. Yep, Silverlight. The ArcGIS API for Microsoft Silverlight??is probably compelling for some .NET developers and we’ve seen some interesting work from IDV Solutions. What is interesting is that it allows developers to leverage Microsoft Virtual Earth in addition to the ESRI ArcGIS Online data which is much more than the Flex API can do. The current information page from ESRI is very light on details (could ESRI have chosen a less compelling example screen shot?), but given some of the immersive user interfaces I’ve seen built with Silverlight, I can only expect we’ll get our socks knocked off at the Dev Summit. So in the course of about a year, we’ve got ESRI Server APIs for .NET, Java, JavaScript, Flex and now Silverlight. So what is left, Rails?

Are you sitting down? ESRI just announced they are going to release a Silverlight API.

Are you sitting down?  ESRI just announced they are going to release a Silverlight API.