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1 <!DOCTYPE article PUBLIC "-//FreeBSD//DTD DocBook V4.1-Based Extension//EN" [
2 <!ENTITY % articles.ent PUBLIC "-//FreeBSD//ENTITIES DocBook FreeBSD Articles Entity Set//EN">
3 %articles.ent;
4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN">
5 %release;
6 ]>
7
8 <article>
9 <articleinfo>
10   <title>&os; &release.current; Release Notes</title>
11
12   <corpauthor>The &os; Project</corpauthor>
13
14   <pubdate>$FreeBSD$</pubdate>
15
16   <copyright>
17     <year>2000</year>
18     <year>2001</year>
19     <year>2002</year>
20     <year>2003</year>
21     <year>2004</year>
22     <year>2005</year>
23     <year>2006</year>
24     <year>2007</year>
25     <year>2008</year>
26     <year>2009</year>
27     <year>2010</year>
28     <year>2011</year>
29     <holder role="mailto:doc@FreeBSD.org">The &os; Documentation Project</holder>
30   </copyright>
31
32   <legalnotice id="trademarks" role="trademarks">
33     &tm-attrib.freebsd;
34     &tm-attrib.ibm;
35     &tm-attrib.ieee;
36     &tm-attrib.intel;
37     &tm-attrib.sparc;
38     &tm-attrib.general;
39   </legalnotice>
40
41   <abstract>
42     <para>The release notes for &os; &release.current; contain a summary
43       of the changes made to the &os; base system on the
44       &release.branch; development line.
45       This document lists applicable security advisories that were issued since
46       the last release, as well as significant changes to the &os;
47       kernel and userland.
48       Some brief remarks on upgrading are also presented.</para>
49   </abstract>
50 </articleinfo>
51
52 <sect1 id="intro">
53   <title>Introduction</title>
54
55   <para>This document contains the release notes for &os;
56     &release.current;.  The latest version can be found at <ulink
57     url="http://www.FreeBSD.org/releases/9.0R/relnotes.html"></ulink>.</para>
58
59   <para>This distribution of &os; &release.current; is a
60     &release.type; distribution.  It can be found at <ulink
61     url="&release.url;"></ulink> or any of its mirrors.  More
62     information on obtaining this (or other) &release.type;
63     distributions of &os; can be found in the <ulink
64     url="&url.books.handbook;/mirrors.html"><quote>Obtaining
65     &os;</quote> appendix</ulink> to the <ulink
66     url="&url.books.handbook;/">&os;
67     Handbook</ulink>.</para>
68
69   <para>All users are encouraged to consult the release errata before
70     installing &os;.  The errata document is updated with
71     <quote>late-breaking</quote> information discovered late in the
72     release cycle or after the release.  Typically, it contains
73     information on known bugs, security advisories, and corrections to
74     documentation.  An up-to-date copy of the errata for &os;
75     &release.current; can be found on the &os; Web site.</para>
76 </sect1>
77
78 <sect1 id="new">
79   <title>What's New</title>
80
81   <para>The most user-visible new or changed features in &os; since
82     8.0-RELEASE can be found at <ulink
83     url="http://www.FreeBSD.org/releases/9.0R/relnotes.html"></ulink></para>
84 </sect1>
85
86 <sect1 id="upgrade">
87   <title>Upgrading from previous releases of &os;</title>
88
89   <para arch="amd64,i386">Beginning with &os; 6.2-RELEASE,
90     binary upgrades between RELEASE versions (and snapshots of the
91     various security branches) are supported using the
92     &man.freebsd-update.8; utility.  The binary upgrade procedure will
93     update unmodified userland utilities, as well as unmodified GENERIC or
94     SMP kernels distributed as a part of an official &os; release.
95     The &man.freebsd-update.8; utility requires that the host being
96     upgraded have Internet connectivity.</para>
97
98   <para>An older form of binary upgrade is supported through the
99     <command>Upgrade</command> option from the main &man.sysinstall.8;
100     menu on CDROM distribution media.  This type of binary upgrade
101     may be useful on non-&arch.i386;, non-&arch.amd64; machines
102     or on systems with no Internet connectivity.</para>
103
104   <para>Source-based upgrades (those based on recompiling the &os;
105     base system from source code) from previous versions are
106     supported, according to the instructions in
107     <filename>/usr/src/UPDATING</filename>.</para>
108
109   <important>
110     <para>Upgrading &os; should, of course, only be attempted after
111       backing up <emphasis>all</emphasis> data and configuration
112       files.</para>
113   </important>
114 </sect1>
115 </article>