Real, dated releases and announcements — verified against official sources, not speculation.
FreeDOS 1.2 shipped December 25, 2016 with the new FDI installer, FDIMPLES package selection, multiple USB and CD images, and a much broader software catalog.
On September 28, 2018, Microsoft placed MS-DOS 1.25 and 2.0 source and binaries on GitHub under MIT; MS-DOS 4.00 followed separately in April 2024.
FreeBSD 12.0 arrived with UEFI+GELI installation, bectl boot environments, LLVM 6.0.1, VIMAGE by default, netdump, and newer bhyve.
FreeBSD 13.0 put Auto ZFS first in bsdinstall, integrated OpenZFS, promoted arm64 to Tier 1, and completed the base LLVM migration.
FreeBSD 14.0 shipped OpenZFS 2.2, OpenSSL 3, CUBIC TCP, larger SMP systems, new bhyve features, safer UFS checks, and cloud images.
pkg 1.0 arrived August 30, 2012 after two years and 2,000 commits; FreeBSD 10 removed pkg_install and used pkg(7) to bootstrap the new manager.
FreeBSD 5.0 shipped January 19, 2003 with SMPng's core locking architecture, while Giant remained widespread and release engineers advised caution.
Haiku R1 Alpha 1 arrived on September 14, 2009 as the project's first official public release, distributed as an installable live CD.
On August 25, 2021 Linux's community marked 30 years since Torvalds' announcement while distinguishing the post from later source releases.
Linux 5.0 shipped on March 3, 2019: a normal development release whose major-number change deliberately did not signal a rewrite or ABI break.