diff --git a/CHANGELOG.md b/CHANGELOG.md
index db3ef44..411d181 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 
 # CHANGELOG
 
+## 2.7.0 (2016-02-04)
+
+* feat(TO3NE): TONE style by number [0-4] after phonetic notation character. #79
+
 ## 2.6.2 (2015-08-25)
 
 * Add iojs-3 support. #60, #61, #62.
diff --git a/README-us_EN.md b/README-us_EN.md
index 32574ee..67f68e8 100644
--- a/README-us_EN.md
+++ b/README-us_EN.md
@@ -121,7 +121,13 @@ Example: `pīn yīn`
 
 ### `.STYLE_TONE2`
 
-Another tone style, use postfix number [0-4].
+tone style by postfix number [0-4].
+
+Example: `pin1 yin1`
+
+### `.STYLE_TO3NE`
+
+tone style by number [0-4] after phonetic notation character.
 
 Example: `pin1 yin1`
 
diff --git a/package.json b/package.json
index 89e9bbd..75a75cf 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pinyin",
-  "version": "2.6.2",
+  "version": "2.7.0",
   "description": "汉语拼音转换工具。",
   "files": [
     "bin",