diff --git a/ReleaseNotes/ReleaseNotes.txt b/ReleaseNotes/ReleaseNotes.txt
index 217f257e2..454d5f597 100644
--- a/ReleaseNotes/ReleaseNotes.txt
+++ b/ReleaseNotes/ReleaseNotes.txt
@@ -1,8 +1,38 @@
-// _Subsurface_ 4.6 Release Notes
+// _Subsurface_ 4.7 Release Notes
 
-_Subsurface_ 4.6.4 - April 2017
+_Subsurface_ 4.7 - late 2017
 ------------------------------------------
 
+Some of the changes since _Subsurface_ 4.6.4
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+- Early and limited support for Bluetooth LE dive computers.
+  Currently BLE isn't supported at all on Windows due to lack of support
+  for Windows in the underlying toolkit that we use. BLE appears to work
+  reasonably well on Mac and works on Linux if Subsurface is built against
+  the latest Qt - unfortunately even Qt 5.9.1 is still missing one
+  critical patch that is needed for some of the BLE dive computers.
+  Side note for those on Windows or a Linux distro that doesn't allow BLE
+  support just yet: you can use Subsurface-mobile 2.x or later on Android
+  and download from your BLE dive computer there.
+- New map widget. No more rotating globe, but much better support for
+  the underlying widget - so overall an improvement.
+- Many small UI fixes
+- Support for multiple tank sensors reporting pressure at the same time.
+  This is something that we hadn't seen before outside of CCR dives, but
+  some newer dive computers support this for example for side mount
+  divers. We now correctly download these data from the dive computers
+  that support it, store and retrieve the pressure data, and visualize
+  multiple tank pressure readings at the same time.
+- Better support for importing dive data from Shearwater desktop, DL7,
+  Datatrak and other 3rd party formats.
+- Support for OSTC 4 configuration
+- Updated Facebook support to use a newer, still actively supported API.
+- Many bug fixes
+- Added support for the following dive computers:
+  - Shearwater Perdix AI (only available where BLE is supported)
+
+
 Some of the changes since _Subsurface_ 4.6.3
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~