KiCAD v5.0.1_1 was released on 2018/10/14. Note that it “includes improved footprint, symbol, and 3D model libraries” and “This release contains several critical bug fixes so please consider upgrading as soon as possible.”
The 1GB download expands to nearly 5GB installed, and seems to install overtop the previous version without issue (tested on Win10.) Note that it seemed to replace every library file, meaning none were “orphaned” from the previous version, which is of course a good thing. Some footprints were not modified while most were, which is good news. Also note that a new fp-lib-table and sym-lib-table are included in /share/kicad/template.