Yes, Autodesk bought HSMWorks and integrated it into Inventor and Fusion. I was using Solidworks at the time and messing with the free 2.5D SW plugin was my first exposure to CAM. In contrast to that, the current CAM in Fusion includes true, simultaneous 5 axis machining. That's pretty amazing, given that it's (currently) free for hobby users. Last time I got a quote for 3 axis Sprutcam, it was over £1000.
There aren't any CAD programs that will import assemblies without complete loss of joints / mates unless I've been missing something. I haven't been following the Fusion import tool but if they can import assemblies with mates, that will be impressive.
I'll take a look at the FreeCAD videos - they look like a good starting point.