According to The Register's coverage, OpenBSD 8.0, the project's 61st release, focuses on larger virtual machines and memory. The VMM/VMD hypervisor now supports up to 64 virtual CPUs per guest, and the x86-64 kernel virtual memory address space has grown from 4GB to 512GB, which should help systems with GPUs that have large VRAM. On Arm64, OpenBSD now supports hibernation, and both x86-64 and Arm64 can use CPU AES instructions for faster encrypted swap. Component updates include OpenSSH 10.6, LibreSSL 4.4.0, DRM graphics drivers from Linux 6.18, and Clang/LLVM 22 as the default compiler, though Loongson support was dropped.
Just before the release, researchers from Calif's "Big Fish" work described a 37-year-old shared-memory bug, chained with a separate kernel flaw, that gave local root access. The vulnerabilities were fixed in OpenBSD 7.9 via errata 026 and 018; OpenBSD 8.0's errata list is short at four fixes.
Separately, a proposed Wine port for OpenBSD/x86-64 could bring 64-bit Windows applications to the OS. It only runs 64-bit Windows code, because OpenBSD disallows the GS register manipulation Wine normally needs; the port emulates instructions using the %gs segment override. The Register notes that since Linux does not need this workaround, the port is unlikely to be merged upstream. Wine still performs no sandboxing, so users would be exposed to the same Windows-malware risks as on other platforms.
Finally, the release's artwork and soundtrack continue OpenBSD's anti-AI theme. The Puffy mascot appears with an extra eye and a signpost with malformed text, and the release theme song, "The Simps on AI," parodies both The Simpsons and AI users. The homepage still carries the project's long-running slogan about only two remote holes.