They've actually had this capability for a long time now, just that the machines have been way to pricey to be purchased by the average machine shop. They demo this stuff using soft aluminum with a diamond bit so they can go super fast with a bright finish, they don't go near as fast cutting steel for the most part. I have also seen a lot of these machines demo'd over the years, then never be produced.
They can also now cast parts +- .005 with a 120 finish and minimal cleanup needed. That will make machining practically obsolete for a lot of things when it comes online enough to be practical.
In time, machinists will only be needed for extreme close tolerance stuff. It's already gotten to the point that companies are no longer hiring machinists for general production, but "machine operators" at minimal wages with a qualified machinist acting as a supervisor/troubleshooter.
I find it interesting that CNC is coming to the home shop more and more lately though, with CNC wood routers, and benchtop CNC mills on the market right now. Still a bit pricey at $1500 - $2500, but not near as expensive as they used to be. Back when I was machining, a CNC mill was 220v 3-phase only, the size of a small car, and started at $50k. One company I worked for had a self loader with self offsetting capability, that cost $500k. I liked that one, I could set it up with long cycle time jobs on each loader pallet, then walk away to go work on short cycle jobs. I just had to stop by and double check the measurements a couple times a night. It still required a machinist to set it up, so we didn't have to worry about some kid just out of High School coming in and replacing us for 1/2 pay.
