This is a breaking change. archweb, archiso-manager and various documentation must be updated. * https://github.com/archlinux/archweb/blob/master/templates/releng/archlinux.ipxe * https://github.com/pierres/archiso-manager/blob/master/Makefile
Place custom mkinitcpio.conf in airootfs. Use a custom mkinitcpio preset to specify generated image file path.
Correct shadow file permissions from build.sh.