diff --git a/.hgtags b/.hgtags
index 79e4bf0..e1499b2 100644
--- a/.hgtags
+++ b/.hgtags
@@ -25,5 +25,3 @@
 b761e0299e9bf66298778cf170b0f64216e3cf7d release.2010-07-01
 5992bf56aa72efcea87d8dff14985fc8fcc68575 release.2010-07-14
 db904d88dc0ebf6ee5b55e44088915695c1223ee release.2010-07-29
-db904d88dc0ebf6ee5b55e44088915695c1223ee release
-
diff --git a/doc/devel/release.html b/doc/devel/release.html
index 8383ba8..60ee919 100644
--- a/doc/devel/release.html
+++ b/doc/devel/release.html
@@ -5,6 +5,40 @@
 <p>This page summarizes the changes between tagged releases of Go.
 For full details, see the <a href="http://code.google.com/p/go/source/list">Mercurial change log</a>.</p>
 
+<h3 id="2010-08-04">2010-08-04</h3>
+
+<pre>
+This release includes a change to os.Open (and co.). The file permission
+argument has been changed to a uint32. Your code may require changes - a simple
+conversion operation at most.
+
+Other changes:
+* amd64: use segment memory for thread-local storage.
+* arm: add gdb support to android launcher script,
+        bugfixes (stack clobbering, indices),
+        disable another flaky test,
+        remove old qemu dependency from gotest.
+* bufio: introduce Peek.
+* bytes: added test case for explode with blank string (thanks Scott Lawrence).
+* cgo: correct multiple return value function invocations (thanks Christian Himpel).
+* crypto/x509: unwrap Subject Key Identifier (thanks Adam Langley).
+* gc: index bounds tests and other fixes.
+* gofmt/go/parser: strengthen syntax checks.
+* goinstall: check for error from exec.*Cmd.Wait() (thanks Alex Brainman).
+* image/png: use image-specific methods for checking opacity.
+* image: introduce Gray and Gray16 types,
+        remove the named colors except for Black and White.
+* json: object members must have a value (thanks Anthony Martin).
+* misc/vim: highlight misspelled words only in comments (thanks Christian Himpel).
+* os: Null device (thanks Peter Mundy).
+* runtime: do not fall through in SIGBUS/SIGSEGV.
+* strings: fix Split("", "", -1) (thanks Scott Lawrence).
+* syscall: make go errors not clash with windows errors (thanks Alex Brainman).
+* test/run: diff old new,
+* websocket: correct challenge response (thanks Tarmigan Casebolt),
+        fix bug involving spaces in header keys (thanks Bill Neubauer). 
+</pre>
+
 <h3 id="2010-07-29">2010-07-29</h3>
 
 <pre>