-to test this distribution, it is sometimes ``unstable.''
- <p>
-After a period of development, the <em>unstable</em> distribution is
-copied to a new distribution directory, called <em>frozen</em>. After
-that has been done, no changes are allowed to the frozen distribution except
-bug fixes; that's why it's called ``frozen.'' After another month or
-a little longer, the <em>frozen</em> distribution is renamed to
-<em>stable</em>, overriding the old <em>stable</em> distribution,
-which is removed at that time.
+to make sure everything in this distribution is working properly, it is
+sometimes ``unstable.''
+ <p>
+Packages get copied from <em>unstable</em> to <em>testing</em> if they
+satisfy certain criteria. To get into <em>testing</em> distribution, a
+package needs to be in the archive for two weeks and not have any
+release critical bugs. After that period, it will propagate into
+<em>testing</em> as soon as anything it depends on is also added. This
+process is automatic. You can see some notes on this system as well
+as <tt>update_excuses</tt> (describing which packages are valid
+candidates, which are not, and why not) at <url
+id="&url-testing-maint;">.
+ <p>
+After a period of development, once the release manager deems fit, the
+<em>testing</em> distribution is frozen, meaning that the policies
+which control how packages move from <em>unstable</em> to testing are
+tightened. Packages which are too buggy are removed. No changes are
+allowed into <em>testing</em> except for bug fixes. After some time
+has elapsed, depending on progress, the <em>testing</em> distribution
+goes into a `deep freeze', when no changes are made to it except those
+needed for the installation system. This is called a ``test cycle'',
+and it can last up to two weeks. There can be several test cycles,
+until the distribution is prepared for release, as decided by the
+release manager. At the end of the last test cycle, the
+<em>testing</em> distribution is renamed to <em>stable</em>,
+overriding the old <em>stable</em> distribution, which is removed at
+that time (although it can be found at <tt>&archive-host;</tt>).