I was going to play with the TPL data stream, but I can not find it anywhere in VS 2012 (including inside extensions and / nuget update dialogs). Did they cut it off, or am I just looking the wrong way?
TPL Dataflow has been migrated from the structure itself to NuGet. So now, to use it from your project, you need to get it from NuGet (right-click the link → Manage NuGet Packages).
The reason given for this change is that the TPL data stream can be updated more often, and not just when updating the entire structure.