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4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
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11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
13 <article xmlns="http://docbook.org/ns/docbook"
14 xmlns:xlink="http://www.w3.org/1999/xlink"
19 <title>&os; &release.current; Release Notes</title>
22 <orgname>The &os; Project</orgname>
25 <pubdate>$FreeBSD$</pubdate>
27 <!-- Last rev: 288943 -->
31 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
35 <legalnotice xml:id="trademarks" role="trademarks">
45 <para>The release notes for &os; &release.current; contain
46 a summary of the changes made to the &os; base system on the
47 &release.branch; development line. This document lists
48 applicable security advisories that were issued since the last
49 release, as well as significant changes to the &os; kernel and
50 userland. Some brief remarks on upgrading are also
55 <sect1 xml:id="intro">
56 <title>Introduction</title>
58 <para>This document contains the release notes for &os;
59 &release.current;. It describes recently added, changed, or
60 deleted features of &os;. It also provides some notes on
61 upgrading from previous versions of &os;.</para>
63 <para releasetype="current">The &release.type; distribution to
64 which these release notes apply represents the latest point
65 along the &release.branch; development branch since
66 &release.branch; was created. Information regarding pre-built,
67 binary &release.type; distributions along this branch can be
69 xlink:href="&release.url;">&release.url;</uri>.</para>
71 <para releasetype="snapshot">The &release.type; distribution to
72 which these release notes apply represents a point along the
73 &release.branch; development branch between &release.prev; and
74 the future &release.next;. Information regarding pre-built,
75 binary &release.type; distributions along this branch can be
77 xlink:href="&release.url;">&release.url;</uri>.</para>
79 <para releasetype="release">This distribution of &os;
80 &release.current; is a &release.type; distribution. It can be
81 found at <uri xlink:href="&release.url;">&release.url;</uri> or
82 any of its mirrors. More information on obtaining this (or
83 other) &release.type; distributions of &os; can be found in the
85 xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
86 &os;</quote> appendix</link> to the <link
87 xlink:href="&url.books.handbook;/">&os;
88 Handbook</link>.</para>
90 <para>All users are encouraged to consult the release errata
91 before installing &os;. The errata document is updated with
92 <quote>late-breaking</quote> information discovered late in the
93 release cycle or after the release. Typically, it contains
94 information on known bugs, security advisories, and corrections
95 to documentation. An up-to-date copy of the errata for &os;
96 &release.current; can be found on the &os; Web site.</para>
98 <para>This document describes the most user-visible new or changed
99 features in &os; since &release.prev;. In general, changes
100 described here are unique to the &release.branch; branch unless
101 specifically marked as &merged; features.</para>
103 <para>Typical release note items document recent security
104 advisories issued after &release.prev;, new drivers or hardware
105 support, new commands or options, major bug fixes, or
106 contributed software upgrades. They may also list changes to
107 major ports/packages or release engineering practices. Clearly
108 the release notes cannot list every single change made to &os;
109 between releases; this document focuses primarily on security
110 advisories, user-visible changes, and major architectural
114 <sect1 xml:id="upgrade">
115 <title>Upgrading from Previous Releases of &os;</title>
117 <para arch="amd64,i386">Binary upgrades between RELEASE versions
118 (and snapshots of the various security branches) are supported
119 using the &man.freebsd-update.8; utility. The binary upgrade
120 procedure will update unmodified userland utilities, as well as
121 unmodified GENERIC kernels distributed as a part of an official
122 &os; release. The &man.freebsd-update.8; utility requires that
123 the host being upgraded have Internet connectivity.</para>
125 <para>Source-based upgrades (those based on recompiling the &os;
126 base system from source code) from previous versions are
127 supported, according to the instructions in
128 <filename>/usr/src/UPDATING</filename>.</para>
131 <para>Upgrading &os; should only be attempted after backing up
132 <emphasis>all</emphasis> data and configuration files.</para>
136 <sect1 xml:id="security-errata">
137 <title>Security and Errata</title>
139 <para>This section lists the various Security Advisories and
140 Errata Notices since &release.prev;.</para>
142 <sect2 xml:id="security">
143 <title>Security Advisories</title>
148 <sect2 xml:id="errata">
149 <title>Errata Notices</title>
155 <sect1 xml:id="userland">
156 <title>Userland</title>
158 <para>This section covers changes and additions to userland
159 applications, contributed software, and system utilities.</para>
161 <sect2 xml:id="userland-config">
162 <title>Userland Configuration Changes</title>
167 <sect2 xml:id="userland-programs">
168 <title>Userland Application Changes</title>
173 <sect2 xml:id="userland-contrib">
174 <title>Contributed Software</title>
179 <sect2 xml:id="userland-installer">
180 <title>Installation and Configuration Tools</title>
185 <sect2 xml:id="userland-rc">
186 <title><filename class="directory">/etc/rc.d</filename>
192 <sect2 xml:id="userland-periodic">
193 <title><filename class="directory">/etc/periodic</filename>
199 <sect2 xml:id="userland-libraries">
200 <title>Runtime Libraries and API</title>
205 <sect2 xml:id="userland-abi">
206 <title>ABI Compatibility</title>
211 <sect2 xml:id="userland-debug">
212 <title>Userland Debugging</title>
218 <sect1 xml:id="kernel">
219 <title>Kernel</title>
221 <para>This section covers changes to kernel configurations, system
222 tuning, and system control parameters that are not otherwise
225 <sect2 xml:id="kernel-general">
226 <title>General Kernel Changes</title>
231 <sect2 xml:id="kernel-bugfix">
232 <title>Kernel Bug Fixes</title>
237 <sect2 xml:id="kernel-config">
238 <title>Kernel Configuration</title>
243 <sect2 xml:id="kernel-modules">
244 <title>Kernel Modules</title>
249 <sect2 xml:id="kernel-sysctl">
250 <title>System Tuning and Controls</title>
256 <sect1 xml:id="drivers">
257 <title>Devices and Drivers</title>
259 <para>This section covers changes and additions to devices and
260 device drivers since &release.prev;.</para>
262 <sect2 xml:id="drivers-device">
263 <title>Device Drivers</title>
268 <sect2 xml:id="drivers-storage">
269 <title>Storage Drivers</title>
274 <sect2 xml:id="drivers-network">
275 <title>Network Drivers</title>
281 <sect1 xml:id="hardware">
282 <title>Hardware Support</title>
284 <para>This section covers general hardware support for physical
285 machines, hypervisors, and virtualization environments, as well
286 as hardware changes and updates that do not otherwise fit in
287 other sections of this document.</para>
289 <sect2 xml:id="hardware-support">
290 <title>Hardware Support</title>
295 <sect2 xml:id="hardware-virtualization">
296 <title>Virtualization Support</title>
298 <para revision="321413">Support for &man.virtio.console.4; has
299 been added to &man.bhyve.4;.</para>
302 <sect2 xml:id="hardware-arm">
303 <title>ARM Support</title>
309 <sect1 xml:id="storage">
310 <title>Storage</title>
312 <para>This section covers changes and additions to file systems
313 and other storage subsystems, both local and networked.</para>
315 <sect2 xml:id="storage-general">
316 <title>General Storage</title>
321 <sect2 xml:id="storage-net">
322 <title>Networked Storage</title>
327 <sect2 xml:id="storage-zfs">
333 <sect2 xml:id="storage-geom">
334 <title><literal>geom(4)</literal></title>
340 <sect1 xml:id="boot">
341 <title>Boot Loader Changes</title>
343 <para>This section covers the boot loader, boot menu, and other
344 boot-related changes.</para>
346 <sect2 xml:id="boot-loader">
347 <title>Boot Loader Changes</title>
352 <sect2 xml:id="boot-menu">
353 <title>Boot Menu Changes</title>
359 <sect1 xml:id="network">
360 <title>Networking</title>
362 <para>This section describes changes that affect networking in
365 <sect2 xml:id="network-general">
366 <title>General Network Changes</title>
371 <sect2 xml:id="network-protocols">
372 <title>Network Protocols</title>
378 <sect1 xml:id="ports">
379 <title>Ports Collection and Package Infrastructure</title>
381 <para>This section covers changes to the &os; Ports
382 Collection, package infrastructure, and package maintenance and
383 installation tools.</para>
385 <sect2 xml:id="ports-infrastructure">
386 <title>Infrastructure Changes</title>
391 <sect2 xml:id="ports-packages ">
392 <title>Packaging Changes</title>
399 <title>Documentation</title>
401 <para>This section covers changes to the &os; Documentation
402 Project sources and toolchain.</para>
404 <sect2 xml:id="doc-sources">
405 <title>Documentation Source Changes</title>
410 <sect2 xml:id="doc-toolchain">
411 <title>Documentation Toolchain Changes</title>
417 <sect1 xml:id="releng">
418 <title>Release Engineering and Integration</title>
420 <para>This section convers changes that are specific to the
421 &os; Release Engineering processes.</para>
423 <sect2 xml:id="releng-changes">
424 <title>Integration Changes</title>