There has been some talk about adding the official libraries, maybe the development versions of them, as managed packages, but it hasn’t been realized. In normal cases you shouldn’t need to download the packages from outside KiCad because they are included through the Windows installer or as distro specific packages on Linux. If you still need the libraries as dummy downloads, do what qu1ck said, and read the FAQ section or this forum if you need info about library management. (Start Here) Frequently Asked Questions