Mark Sandboxing 2.0 design doc as launched on bazel.io.

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MOS_MIGRATED_REVID=132971817
diff --git a/site/designs/_posts/2016-06-02-sandboxing.md b/site/designs/_posts/2016-06-02-sandboxing.md
index dd81f61..99c95985 100644
--- a/site/designs/_posts/2016-06-02-sandboxing.md
+++ b/site/designs/_posts/2016-06-02-sandboxing.md
@@ -6,8 +6,11 @@
 # Bazel Sandboxing 2.0
 
 This doc was written by [philwo@google.com](mailto:philwo@google.com).
-Status: unimplemented, section "Handling of environment variables" superseded
-by the
+
+Status: launched
+
+The section "Handling of environment variables" inspired and was then
+superseded by the more detailed
 [Specifying environment variables](/docs/designs/2016/06/21/environment.html)
 design document.