diff --git a/CMakeLists.txt b/CMakeLists.txt
index c3bf5b826c..2490246a32 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 
 set(CMAKE_PROJECT_VERSION_MAJOR 0)
 set(CMAKE_PROJECT_VERSION_MINOR 6)
-set(CMAKE_PROJECT_VERSION_PATCH 0)
+set(CMAKE_PROJECT_VERSION_PATCH 1)
 
 set(BUILD_GUI_DEFAULT ON)
 set(USE_SDL2_DEFAULT ON)
diff --git a/README.md b/README.md
index 5abdc8127b..3bf73dc142 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ for other operating systems, you may [build the source](#developer-info).
     - YM3812 (OPL2)
     - YMF262 (OPL3) with full 4-op support!
     - Y8950 (OPL with ADPCM)
+  - ESS ESFM (like OPL3 but with more features)
   - square wave chips:
     - AY-3-8910/YM2149(F) used in several computers and game consoles
     - Commodore VIC used in the VIC-20
@@ -86,6 +87,7 @@ for other operating systems, you may [build the source](#developer-info).
   - modern/fantasy:
     - Commander X16 VERA
     - tildearrow Sound Unit
+    - PowerNoise
     - Generic PCM DAC
 - mix and match sound chips!
   - over 200 ready to use presets from computers, game consoles and arcade boards...
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 1b09780c50..6fed5ed8e3 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -15,8 +15,8 @@ android {
         }
         minSdkVersion 21
         targetSdkVersion 26
-        versionCode 181
-        versionName "0.6"
+        versionCode 192
+        versionName "0.6.1"
         externalNativeBuild {
             cmake {
                 arguments "-DANDROID_APP_PLATFORM=android-21", "-DANDROID_STL=c++_static", "-DWARNINGS_ARE_ERRORS=ON"
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index a8b2007b1d..0c430ea6b4 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.tildearrow.furnace"
-    android:versionCode="181"
-    android:versionName="0.6"
+    android:versionCode="192"
+    android:versionName="0.6.1"
     android:installLocation="auto">
 
     <!-- OpenGL ES 2.0 -->
diff --git a/demos/specs2/back_into_adventure.fur b/demos/specs2/back_into_adventure.fur
new file mode 100644
index 0000000000..865a97e6b9
Binary files /dev/null and b/demos/specs2/back_into_adventure.fur differ
diff --git a/demos/specs2/spa.fur b/demos/specs2/spa.fur
new file mode 100644
index 0000000000..34ecd25582
Binary files /dev/null and b/demos/specs2/spa.fur differ
diff --git a/papers/clipboard-format.md b/papers/clipboard-format.md
index 06d1c4f4a6..7182b59e21 100644
--- a/papers/clipboard-format.md
+++ b/papers/clipboard-format.md
@@ -6,7 +6,7 @@ when copying pattern data from Furnace, it's stored in the clipboard as plain te
 org.tildearrow.furnace - Pattern Data (144)
 ```
 
-this top line of text is always the same except for the number in parentheses, which is the internal build number. for example, 0.6 is `181`.
+this top line of text is always the same except for the number in parentheses, which is the internal build number. for example, 0.6.1 is `192`.
 
 the second line is a number between 0 and 18 (decimal) which indicates which column the clip starts from.
 - `0`: note.
diff --git a/papers/format.md b/papers/format.md
index fc442e8952..149c498695 100644
--- a/papers/format.md
+++ b/papers/format.md
@@ -32,6 +32,7 @@ these fields are 0 in format versions prior to 100 (0.6pre1).
 
 the format versions are:
 
+- 192: Furnace 0.6.1
 - 181: Furnace 0.6
 - 180: Furnace 0.6pre18
 - 179: Furnace 0.6pre17
diff --git a/res/Info.plist b/res/Info.plist
index 7895024da8..20f1b73b52 100644
--- a/res/Info.plist
+++ b/res/Info.plist
@@ -15,17 +15,17 @@
 	<key>CFBundleInfoDictionaryVersion</key>
 	<string>6.0</string>
 	<key>CFBundleLongVersionString</key>
-	<string>0.6</string>
+	<string>0.6.1</string>
 	<key>CFBundleName</key>
 	<string>Furnace</string>
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.6</string>
+	<string>0.6.1</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>0.6</string>
+	<string>0.6.1</string>
 	<key>NSHumanReadableCopyright</key>
 	<string></string>
 	<key>NSHighResolutionCapable</key>
diff --git a/scripts/release-linux-AppImage.sh b/scripts/release-linux-AppImage.sh
index c535d2f6ec..f5fbfeeb7c 100755
--- a/scripts/release-linux-AppImage.sh
+++ b/scripts/release-linux-AppImage.sh
@@ -8,11 +8,11 @@ fi
 
 cd /tmp/furnace
 
-if [ ! -e linuxbuild ]; then
-  mkdir linuxbuild || exit 1
+if [ ! -e aibuild ]; then
+  mkdir aibuild || exit 1
 fi
 
-cd linuxbuild
+cd aibuild
 
 cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DCMAKE_C_FLAGS="-O2" -DCMAKE_CXX_FLAGS="-O2 -Wall -Wextra -Wno-unused-parameter -Werror" -DWITH_DEMOS=OFF -DWITH_INSTRUMENTS=OFF -DWITH_WAVETABLES=OFF .. || exit 1
 make -j4 || exit 1
@@ -20,7 +20,7 @@ make -j4 || exit 1
 cd ..
 
 mkdir -p release/linux/furnace.AppDir || exit 1
-cd linuxbuild
+cd aibuild
 
 make DESTDIR=/tmp/furnace/release/linux/furnace.AppDir install || exit 1
 
diff --git a/src/engine/engine.h b/src/engine/engine.h
index c1d60bbea3..4ce839c0b2 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -52,10 +52,10 @@ class DivWorkPool;
 #define EXTERN_BUSY_BEGIN_SOFT e->softLocked=true; e->isBusy.lock();
 #define EXTERN_BUSY_END e->isBusy.unlock(); e->softLocked=false;
 
-#define DIV_UNSTABLE
+//#define DIV_UNSTABLE
 
-#define DIV_VERSION "dev191"
-#define DIV_ENGINE_VERSION 191
+#define DIV_VERSION "0.6.1"
+#define DIV_ENGINE_VERSION 192
 // for imports
 #define DIV_VERSION_MOD 0xff01
 #define DIV_VERSION_FC 0xff02
diff --git a/src/gui/settings.cpp b/src/gui/settings.cpp
index 1fdb594a2f..71f3cda809 100644
--- a/src/gui/settings.cpp
+++ b/src/gui/settings.cpp
@@ -44,7 +44,7 @@
 #endif
 
 #ifdef HAVE_FREETYPE
-#define FONT_BACKEND_DEFAULT 1
+#define FONT_BACKEND_DEFAULT 0
 #else
 #define FONT_BACKEND_DEFAULT 0
 #endif