Being a lot snappier than previous releases, Open Build Service (OBS) 2.4 brings support for a new package format (Arch’s PKGBUILD), Secure Boot signing, AppStream metadata, and introducing a new constraint system. Open Build Service 2.4 is available for any open source developers who want to build packages for their Linux distributions, including openSUSE, SUSE Linux Enterprise, Arch, Ubuntu, Debian, Red Hat Enterprise Linux, and Fedora. You can access it from the reference server http://build.opensuse.org.