diff --git a/HISTORY.rst b/HISTORY.rst
index 4ea10ced..253ae357 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -7,6 +7,7 @@ PlatformIO 3.0
 3.6.1 (2018-??-??)
 ~~~~~~~~~~~~~~~~~~
 
+* Introduced `"Release" and "Debug" Build Configurations <http://docs.platformio.org/page/projectconf/build_configurations.html>`__
 * Build project in "Debug Mode" including debug information with a new
   ``debug`` target using `platformio run <https://docs.platformio.org/page/userguide/cmd_run.html>`__ command or `targets <http://docs.platformio.org/page/projectconf/section_env_general.html#targets>`__ option in ``platformio.ini``.
   The last option allows to avoid project rebuilding between "Run/Debug" modes.
diff --git a/docs b/docs
index 85979eea..5e6ae4cf 160000
--- a/docs
+++ b/docs
@@ -1 +1 @@
-Subproject commit 85979eea2115729aa0615e1feaf5bb48b8430b76
+Subproject commit 5e6ae4cf29539032a01282025a51afa5468b5633