The developers of FreeBSD have made available the first release candidate of version 11.0. You can download the ISO or update files here. The full release notes are in the link below.

A summary of changes since BETA4 includes:

o A NULL pointer dereference in IPSEC has been fixed.

o Support for SSH Protocol 1 has been removed.

o OpenSSH DSA keys have been disabled by default.  Users upgrading from
  prior FreeBSD versions are urged to update their SSH keys to DSA or
  ECDSA keys before upgrading to 11.0-RC1.

o PCI-e hotplug on bridges with power controllers has been disabled.

o A loader tunable (hw.pci.enable_pcie_hp) to disable PCI-e HotPlug has
  been added.

o A VESA panic on suspend has been fixed.

o Google Compute Engine image publication has been fixed.

o An AES-ICM heap corruption typo bug has been fixed.

o A regression in pf.conf while parsing the 'interval' keyword has been

o A ZFS/VFS deadlock has been fixed.

A list of changes since 10.0-RELEASE are available on the releng/11.0
release notes:

Please note, the release notes page is not yet complete, and will be
updated on an ongoing basis as the 11.0-RELEASE cycle progresses.

Official announcement:

Related links:

Softpedia – FreeBSD 11.0 Up to Release Candidate State, Support for SSH Protocol v1 Removed

DistroWatch – Development Release: FreeBSD 11.0-RC1

Phoronix – FreeBSD Catching Up To Linux DRM Graphics Drivers, In Sync With Git

FreeBSD Forums – Working Nvidia driver 367.35 on FreeBSD 11 (Short step-for-step How-to)