CentOS 8 will be released on September 24 according to the CentOS 8 Rough Status Page and a Twitter post by the CentOS Project

Red Hat Enterprise Linux 8 was released on 2019-05-07, and everyone is waiting to find out when the CentOS rebuild will occur. This document is meant to cover general questions and timeline for what is happening.

A CentOS major release takes a lot of planning and changes in tooling as it is based on a much newer version of Fedora than previous versions. This means that everything from the installer, packages, packaging, and build systems need major overhauls to work with the newer OS. This means that there is always a ramp up period depending on the changes needed to make a rebuild work. The differences between EL-8 and EL-7 are no exception as the kernel has changed drastically, the repository format has added 'modules' and RPMS have grown many features that EL7 and before do not have. About the only item which has not drastically changed between EL7 and EL8 is the init system which is still systemd. [This is a first as EL5 had SysV, EL6 had Upstart, and EL7 had Systemd].

Architectures
Main architectures
The following arches are built automatically in parallel in our new Build System :

x86_64 (w/ i686 multilib)
ppc64le (Little Endian)
aarch64 (ARM64, ARMv8)

Updates
2019-09-16 The final release will be on September 24.

2019-09-10 According to this thread, work was stopped on CentOS 8 after upstream released 7.7. Since so many more users have CentOS 7.x in production, and no one has 8 yet, priority has been given to the 7.7 update... and once it is done, work will continue on 8.

2019-07-26 The work on getting images and builds in place are ongoing. Packages have been built and the work on getting the installer integrated with the code is ongoing.

  CentOS 8 is coming next week