[sysprof: 110/110] update NEWS

[Christian Hergert <chergert src gnome org>]

commit 4f659abad221534efed76f0d00a33ebbc056754a
Author: Christian Hergert <chergert redhat com>
Date:   Sun Oct 9 21:12:49 2016 -0700

    update NEWS

 NEWS |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)
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diff --git a/NEWS b/NEWS
index 24dbdc7..c3bda9a 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,22 @@
+Overview of changes in Sysprof 3.22.1
+=====================================
+
+ * A new data source called "hostinfo" has been added. It records various
+   CPU datapoints as "counters" in the sysprof capture.
+ * A new visualizers abstraction has been added so that we can start
+   providing new ways to look at profiler data.
+ * A CPU visualizer has been added which renders datapoints recorded
+   from the hostinfo data source.
+ * Selecting ranges of the visualizer will update the callgraph limiting
+   stacktrace samples, to the given time range.
+ * Missing headers are now installed which may be needed by applications
+   using libsysprof-ui.
+ * A keyboard shortcuts dialog has been added.
+ * A theme manager has been added to allow us to provide custom CSS for
+   various themes. Currently, we have additional styling added for
+   Adwaita and Adwaita-dark.
+
+
 Overview of changes in Sysprof 3.22.0
 =====================================