diff --git a/components/checkbox/Group.jsx b/components/checkbox/Group.jsx
index b0e795c7d4..7071094228 100644
--- a/components/checkbox/Group.jsx
+++ b/components/checkbox/Group.jsx
@@ -5,6 +5,7 @@ export default React.createClass({
   getDefaultProps() {
     return {
       options: [],
+      defaultValue: [],
       onChange() {},
     };
   },
@@ -17,13 +18,13 @@ export default React.createClass({
   getInitialState() {
     const { value, defaultValue } = this.props;
     return {
-      value: value || defaultValue || [],
+      value: value || defaultValue,
     };
   },
   componentWillReceiveProps(nextProps) {
     if ('value' in nextProps) {
       this.setState({
-        value: nextProps.value,
+        value: nextProps.value || [],
       });
     }
   },
diff --git a/components/date-picker/PickerMixin.jsx b/components/date-picker/PickerMixin.jsx
index aa567b6c6e..9951fa9858 100644
--- a/components/date-picker/PickerMixin.jsx
+++ b/components/date-picker/PickerMixin.jsx
@@ -30,10 +30,8 @@ export default {
         date.setTime(+value);
         return date;
       }
-    } else if (value === null) {
-      return value;
     }
-    return undefined;
+    return value;
   },
 
   // remove input readonly warning
diff --git a/components/time-picker/index.jsx b/components/time-picker/index.jsx
index d0098dc379..567321e385 100644
--- a/components/time-picker/index.jsx
+++ b/components/time-picker/index.jsx
@@ -4,6 +4,7 @@ import TimePicker from 'rc-time-picker/lib/TimePicker';
 import objectAssign from 'object-assign';
 import defaultLocale from './locale/zh_CN';
 import classNames from 'classnames';
+import GregorianCalendar from 'gregorian-calendar';
 
 const AntTimePicker = React.createClass({
   getDefaultProps() {
@@ -49,12 +50,18 @@ const AntTimePicker = React.createClass({
    */
   parseTimeFromValue(value) {
     if (value) {
-      return this.getFormatter().parse(value, {
-        locale: this.getLocale().calendar,
-        obeyCount: true,
-      });
+      if (typeof value === 'string') {
+        return this.getFormatter().parse(value, {
+          locale: this.getLocale().calendar,
+          obeyCount: true,
+        });
+      } else if (value instanceof Date) {
+        let date = new GregorianCalendar(this.getLocale().calendar);
+        date.setTime(+value);
+        return date;
+      }
     }
-    return undefined;
+    return value;
   },
 
   handleChange(value) {
@@ -77,8 +84,6 @@ const AntTimePicker = React.createClass({
     }
     if (props.value) {
       props.value = this.parseTimeFromValue(props.value);
-    } else {
-      delete props.value;
     }
     let className = classNames({
       [props.className]: !!props.className,
diff --git a/package.json b/package.json
index 3eae53fd8c..cb6062364b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "antd",
-  "version": "0.12.0-beta8",
+  "version": "0.12.0-beta9",
   "title": "Ant Design",
   "description": "一个 UI 设计语言",
   "homepage": "http://ant.design/",
@@ -73,8 +73,6 @@
     "warning": "~2.1.0"
   },
   "devDependencies": {
-    "rc-scroll-anim": "0.0.5",
-    "rc-tween-one": "0.1.5",
     "autoprefixer-loader": "^3.1.0",
     "babel-cli": "^6.2.0",
     "babel-core": "^6.2.1",
@@ -104,6 +102,9 @@
     "lodash": "^3.10.0",
     "nico-jsx": "~0.7.0",
     "pre-commit": "1.x",
+    "rc-form": "^0.8.0",
+    "rc-scroll-anim": "0.0.5",
+    "rc-tween-one": "0.1.5",
     "react": "0.14.x",
     "react-addons-test-utils": "0.14.x",
     "react-copy-to-clipboard": "^3.0.4",
diff --git a/scripts/demo.js b/scripts/demo.js
index 284d8359f9..9d0bd5a921 100644
--- a/scripts/demo.js
+++ b/scripts/demo.js
@@ -25,6 +25,7 @@ window.require = function (path) {
 require('../style/index.less');
 window['css-animation'] = require('css-animation');
 window['react-router'] = require('react-router');
+window['rc-form'] = require('rc-form');
 window.CopyToClipboard = require('react-copy-to-clipboard');
 var antd = require('../index');
 var React = require('react');