FreeBSD is an advanced operating system for modern server, desktop, and embedded computer platforms. FreeBSD's code base has undergone over thirty years of continuous development, improvement, and optimization. It is developed and maintained by a large team of individuals. FreeBSD provides advanced networking, impressive security features, and world class performance and is used by some of the world's busiest web sites and most pervasive embedded networking and storage devices.
FreeBSD 11.1-RELEASE Announcement
Some of the highlights:
Clang, LLVM, LLD, LLDB, and libc++ have been updated to version 4.0.0.
Many third-party (contributed) software updates, such as the Elf Tool Chain, ACPICA, libarchive(3), ntpd(8), unbound(8), and more.
Support for blacklistd(8) has been added to OpenSSH.
The zfsbootcfg(8) utility has been added, providing one-time boot.config(5)-style options for zfsboot(8).
The efivar(8) utility has been added, providing an interface to manage UEFI variables.
Support for Microsoft® Hyper-V™ Generation 2 virtual machines has been added.
The ena(4) driver has been added, providing support for "next generation" Enhanced Networking on the Amazon® EC2™ platform.
The NFS client now supports the Amazon® Elastic File System™ (EFS).
The EFI loader can now access remote files via TFTP in addition to NFS as a runtime configuration option.
ZFS now stores compressed data in cache, improving cache hit rates and performance.
Several updates to provide build reproducibility.