Will there be a new ArcGIS API for Silverlight that will be 100% compatible with ArcGIS Server 10.4 (I know a lot of 3.3 API works, but I also know that older APIS never completely work and have to be adjusted).
I also know that Esri is retiring 3.x on 2016-06-01, I'm thinking there's a good chance that there will be no new release. Can anyone confirm this?