It does have some important developments, though,
including a refinement to the memory model regarding synchronization,
precise garbage collection,
-significant performance improvements,
-including TODO,
+significant performance improvements across the board,
and support for Google's Native Client architecture (NaCl).
As always, Go 1.3 keeps the <a href="/doc/go1compat.html">promise
of compatibility</a>,
<h3 id="windows2000">Removal of support for Windows 2000</h3>
<p>
-TODO
-windows 2000 removed (CL 74790043)
+Microsoft stopped supporting Windows 2000 in 2010.
+Since it has <a href="https://codereview.appspot.com/74790043">implementation difficulties</a>
+regarding exception handling (signals in Unix terminology),
+as of Go 1.3 it is not supported by Go either.
</p>
TODO: Which should be called out?
</p>
+<p>
+There is an important new type added to the standard library: <a href="/pkg/sync/pool/"><code>sync/pool</code></a>.
+TODO: sync: add Pool (CL 41860043, 46010043)
+</p>
+
<h3 id="new_packages">New packages</h3>
<p>
-There is one new package added to the standard library: <a href="/pkg/sync/pool/"><code>sync/pool</code></a>.
-TODO: sync: add Pool (CL 41860043, 46010043)
+No new packages appear in the core libraries in Go 1.3.
</p>
<h3 id="minor_library_changes">Minor changes to the library</h3>