They generally support several architectures and are translated into multiple languages.
open SUSE used to offer a new release every 8 months with 18 months of support, but now offers two options.
Tumbleweed uses a rolling release model that updates to the latest stable software, with frequent snapshots.
Fedora 21 for Power was released December 17, 2014.
Fedora 21 for IBM System z was released December 18, 2014. Fedora 23 for aarch64 and Power were released November 3, 2015.
In the meantime, we hope you will enjoy this celebration of Linux diversity, with over 500 distributions; large and small, specialized and generalized, old and new.
Leading distributions have usually been around for a while and are well-established.
Minor revisions have been made almost every week since then. There have been no major releases since then, however new distributions are added when found, dead distributions are removed when found, and link checking remains an ongoing process.
Someday this list will hopefully move to a searchable database, making it easier than ever to find what you are looking for.
Fedora strives for a new release every 6 months and releases will be supported for about 13 months.
Fedora 21 for aarch64 was released December 17, 2014.
Debian GNU/k Free BSD was introduced as a "technology preview" along with squeeze (6.0). An unofficial Debian GNU/Hurd 2017 release happened June 18, 2017.