For instance, PXE boot, which sysadmins and tech enthusiasts have been using for years?
Yeah, if Apples "new feature" makes you think that's pretty good, just wait until you seen an entire room of PC's installing Windows simultaneously over the network! Ever wonder that LAN boot is?
^This is another reason people don't like Apple. They release a decade old feature, bundle it up as new and the fans gorge themselves on it.