That MS decided to totally blow it up in .NET 4.0. (weblogs.asp.net link, S/O link). Yes, that’s right, they are totally re-writing WF 4.0 from the ground-up. As the first link states, this could be for any number of reasons including lack of adoption and the perception that WF is just too complex – which I happen to agree with. 3.0/3.5 workflows will still work, but only on the 3.0 runtime. On the one hand, I have to give some credit to MS for basically saying “Hey guys, we effed up and we’re gonna...