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19 xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
22 <title>&os; &release.current; Release Notes</title>
25 <orgname>The &os; Project</orgname>
28 <pubdate>$FreeBSD$</pubdate>
30 <!-- First rev: 285831 -->
31 <!-- Last rev: 284813 -->
35 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
39 <legalnotice xml:id="trademarks" role="trademarks">
49 <para>The release notes for &os; &release.current; contain
50 a summary of the changes made to the &os; base system on the
51 &release.branch; development line. This document lists
52 applicable security advisories that were issued since the last
53 release, as well as significant changes to the &os; kernel and
54 userland. Some brief remarks on upgrading are also
59 <sect1 xml:id="intro">
60 <title>Introduction</title>
62 <para>This document contains the release notes for &os;
63 &release.current;. It describes recently added, changed, or
64 deleted features of &os;. It also provides some notes on
65 upgrading from previous versions of &os;.</para>
67 <para releasetype="current">The &release.type; distribution to
68 which these release notes apply represents the latest point
69 along the &release.branch; development branch since
70 &release.branch; was created. Information regarding pre-built,
71 binary &release.type; distributions along this branch can be
73 xlink:href="&release.url;">&release.url;</uri>.</para>
75 <para releasetype="snapshot">The &release.type; distribution to
76 which these release notes apply represents a point along the
77 &release.branch; development branch between &release.prev; and
78 the future &release.next;. Information regarding pre-built,
79 binary &release.type; distributions along this branch can be
81 xlink:href="&release.url;">&release.url;</uri>.</para>
83 <para releasetype="release">This distribution of &os;
84 &release.current; is a &release.type; distribution. It can be
85 found at <uri xlink:href="&release.url;">&release.url;</uri> or
86 any of its mirrors. More information on obtaining this (or
87 other) &release.type; distributions of &os; can be found in the
89 xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
90 &os;</quote> appendix</link> to the <link
91 xlink:href="&url.books.handbook;/">&os;
92 Handbook</link>.</para>
94 <para>All users are encouraged to consult the release errata
95 before installing &os;. The errata document is updated with
96 <quote>late-breaking</quote> information discovered late in the
97 release cycle or after the release. Typically, it contains
98 information on known bugs, security advisories, and corrections
99 to documentation. An up-to-date copy of the errata for &os;
100 &release.current; can be found on the &os; Web site.</para>
102 <para>This document describes the most user-visible new or changed
103 features in &os; since &release.prev;.</para>
105 <para>Typical release note items document recent security
106 advisories issued after &release.prev;, new drivers or hardware
107 support, new commands or options, major bug fixes, or
108 contributed software upgrades. They may also list changes to
109 major ports/packages or release engineering practices. Clearly
110 the release notes cannot list every single change made to &os;
111 between releases; this document focuses primarily on security
112 advisories, user-visible changes, and major architectural
116 <sect1 xml:id="upgrade">
117 <title>Upgrading from Previous Releases of &os;</title>
119 <para arch="amd64,i386">Binary upgrades between RELEASE versions
120 (and snapshots of the various security branches) are supported
121 using the &man.freebsd-update.8; utility. The binary upgrade
122 procedure will update unmodified userland utilities, as well as
123 unmodified <filename>GENERIC</filename> kernel distributed as
124 a part of an official &os; release. The &man.freebsd-update.8;
125 utility requires that the host being upgraded have Internet
128 <para>Source-based upgrades (those based on recompiling the &os;
129 base system from source code) from previous versions are
130 supported, according to the instructions in
131 <filename>/usr/src/UPDATING</filename>.</para>
134 <para>Upgrading &os; should only be attempted after
135 backing up <emphasis>all</emphasis> data and configuration
140 <sect1 xml:id="security-errata">
141 <title>Security and Errata</title>
143 <para>This section lists the various Security Advisories and
144 Errata Notices since &release.prev;.</para>
146 <sect2 xml:id="security">
147 <title>Security Advisories</title>
152 <sect2 xml:id="errata">
153 <title>Errata Notices</title>
159 <sect1 xml:id="userland">
160 <title>Userland</title>
162 <para>This section covers changes and additions to userland
163 applications, contributed software, and system utilities.</para>
165 <sect2 xml:id="userland-config">
166 <title>Userland Configuration Changes</title>
171 <sect2 xml:id="userland-programs">
172 <title>Userland Application Changes</title>
177 <sect2 xml:id="userland-contrib">
178 <title>Contributed Software</title>
183 <sect2 xml:id="userland-installer">
184 <title>Installation and Configuration Tools</title>
189 <sect2 xml:id="userland-rc">
190 <title><filename class="directory">/etc/rc.d</filename>
196 <sect2 xml:id="userland-periodic">
197 <title><filename class="directory">/etc/periodic</filename>
203 <sect2 xml:id="userland-libraries">
204 <title>Runtime Libraries and API</title>
209 <sect2 xml:id="userland-abi">
210 <title>ABI Compatibility</title>
216 <sect1 xml:id="kernel">
217 <title>Kernel</title>
219 <para>This section covers changes to kernel configurations, system
220 tuning, and system control parameters that are not otherwise
223 <sect2 xml:id="kernel-bugfix">
224 <title>Kernel Bug Fixes</title>
229 <sect2 xml:id="kernel-config">
230 <title>Kernel Configuration</title>
235 <sect2 xml:id="kernel-sysctl">
236 <title>System Tuning and Controls</title>
242 <sect1 xml:id="drivers">
243 <title>Devices and Drivers</title>
245 <para>This section covers changes and additions to devices and
246 device drivers since &release.prev;.</para>
248 <sect2 xml:id="drivers-device">
249 <title>Device Drivers</title>
254 <sect2 xml:id="drivers-storage">
255 <title>Storage Drivers</title>
260 <sect2 xml:id="drivers-network">
261 <title>Network Drivers</title>
267 <sect1 xml:id="hardware">
268 <title>Hardware Support</title>
270 <para>This section covers general hardware support for physical
271 machines, hypervisors, and virtualization environments, as well
272 as hardware changes and updates that do not otherwise fit in
273 other sections of this document.</para>
275 <sect2 xml:id="hardware-support">
276 <title>Hardware Support</title>
281 <sect2 xml:id="hardware-virtualization">
282 <title>Virtualization Support</title>
287 <sect2 xml:id="hardware-arm">
288 <title>ARM Support</title>
294 <sect1 xml:id="storage">
295 <title>Storage</title>
297 <para>This section covers changes and additions to file systems
298 and other storage subsystems, both local and networked.</para>
300 <sect2 xml:id="storage-general">
301 <title>General Storage</title>
306 <sect2 xml:id="storage-net">
307 <title>Networked Storage</title>
312 <sect2 xml:id="storage-zfs">
318 <sect2 xml:id="storage-geom">
319 <title>&man.geom.4;</title>
325 <sect1 xml:id="boot">
326 <title>Boot Loader Changes</title>
328 <para>This section covers the boot loader, boot menu, and other
329 boot-related changes.</para>
331 <sect2 xml:id="boot-loader">
332 <title>Boot Loader Changes</title>
337 <sect2 xml:id="boot-menu">
338 <title>Boot Menu Changes</title>
344 <sect1 xml:id="network">
345 <title>Networking</title>
347 <para>This section describes changes that affect networking in
350 <sect2 xml:id="network-protocols">
351 <title>Network Protocols</title>
357 <sect1 xml:id="ports">
358 <title>Ports Collection and Package Infrastructure</title>
360 <para>This section covers changes to the &os; Ports
361 Collection, package infrastructure, and package maintenance and
362 installation tools.</para>
364 <sect2 xml:id="ports-infrastructure">
365 <title>Infrastructure Changes</title>
370 <sect2 xml:id="ports-packages ">
371 <title>Packaging Changes</title>
378 <title>Documentation</title>
380 <para>This section covers changes to the &os; Documentation
381 Project sources and toolchain.</para>
383 <sect2 xml:id="doc-sources">
384 <title>Documentation Source Changes</title>
389 <sect2 xml:id="doc-toolchain">
390 <title>Documentation Toolchain Changes</title>
396 <sect1 xml:id="releng">
397 <title>Release Engineering and Integration</title>
399 <para>This section convers changes that are specific to the
400 &os; Release Engineering processes.</para>
402 <sect2 xml:id="releng-changes">
403 <title>Integration Changes</title>