diff --git a/framework/base/Model.php b/framework/base/Model.php
index e1a2818f56..1d67c3f674 100644
--- a/framework/base/Model.php
+++ b/framework/base/Model.php
@@ -765,6 +765,7 @@ class Model extends Component implements IteratorAggregate, ArrayAccess, Arrayab
      * supplied by end user.
      * @param string $formName the form name to be used for loading the data into the models.
      * If not set, it will use the [[formName()]] value of the first model in `$models`.
+     * This parameter is available since version 2.0.1.
      * @return boolean whether at least one of the models is successfully populated.
      */
     public static function loadMultiple($models, $data, $formName = null)
diff --git a/framework/console/controllers/MessageController.php b/framework/console/controllers/MessageController.php
index 6c64c34fdb..455a2189ff 100644
--- a/framework/console/controllers/MessageController.php
+++ b/framework/console/controllers/MessageController.php
@@ -313,6 +313,7 @@ class MessageController extends Controller
      * @param array|string $a
      * @param array|string $b
      * @return boolean
+     * @since 2.0.1
      */
     protected function tokensEqual($a, $b)
     {
@@ -329,6 +330,7 @@ class MessageController extends Controller
      *
      * @param array $tokens
      * @return int|string
+     * @since 2.0.1
      */
     protected function getLine($tokens)
     {
diff --git a/framework/console/controllers/MigrateController.php b/framework/console/controllers/MigrateController.php
index a717357f68..2e1bf99aeb 100644
--- a/framework/console/controllers/MigrateController.php
+++ b/framework/console/controllers/MigrateController.php
@@ -182,6 +182,7 @@ class MigrateController extends BaseMigrateController
 
     /**
      * @inheritdoc
+     * @since 2.0.1
      */
     protected function refreshSchema()
     {
diff --git a/framework/db/Command.php b/framework/db/Command.php
index 5a3fe2053b..b050b36409 100644
--- a/framework/db/Command.php
+++ b/framework/db/Command.php
@@ -784,6 +784,7 @@ class Command extends Component
      * for valid fetch modes. If this parameter is null, the value set in [[fetchMode]] will be used.
      * @return mixed the method execution result
      * @throws Exception if the query causes any problem
+     * @since 2.0.1 this method is protected (was private before).
      */
     protected function queryInternal($method, $fetchMode = null)
     {
diff --git a/framework/helpers/BaseInflector.php b/framework/helpers/BaseInflector.php
index 468de8ff6f..74eb685541 100644
--- a/framework/helpers/BaseInflector.php
+++ b/framework/helpers/BaseInflector.php
@@ -515,6 +515,7 @@ class BaseInflector
      * @param string $connector the string connecting words other than those connected by
      * $lastWordConnector and $twoWordsConnector
      * @return string the generated sentence
+     * @since 2.0.1
      */
     public static function sentence(array $words, $twoWordsConnector = ' and ', $lastWordConnector = null, $connector = ', ')
     {
diff --git a/framework/helpers/BaseStringHelper.php b/framework/helpers/BaseStringHelper.php
index 1928e48d0c..f9a4607f86 100644
--- a/framework/helpers/BaseStringHelper.php
+++ b/framework/helpers/BaseStringHelper.php
@@ -98,7 +98,8 @@ class BaseStringHelper
      * @param integer $length How many characters from original string to include into truncated string.
      * @param string $suffix String to append to the end of truncated string.
      * @param string $encoding The charset to use, defaults to charset currently used by application.
-     * @param boolean $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags
+     * @param boolean $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags.
+     * This parameter is available since version 2.0.1.
      * @return string the truncated string.
      */
     public static function truncate($string, $length, $suffix = '...', $encoding = null, $asHtml = false)
@@ -120,7 +121,8 @@ class BaseStringHelper
      * @param string $string The string to truncate.
      * @param integer $count How many words from original string to include into truncated string.
      * @param string $suffix String to append to the end of truncated string.
-     * @param boolean $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags
+     * @param boolean $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags.
+     * This parameter is available since version 2.0.1.
      * @return string the truncated string.
      */
     public static function truncateWords($string, $count, $suffix = '...', $asHtml = false)
@@ -145,6 +147,7 @@ class BaseStringHelper
      * @param string $suffix String to append to the end of the truncated string.
      * @param string|boolean $encoding
      * @return string
+     * @since 2.0.1
      */
     protected static function truncateHtml($string, $count, $suffix, $encoding = false)
     {
diff --git a/framework/i18n/DateTimeExtended.php b/framework/i18n/DateTimeExtended.php
index ecbeb74557..c201d939d9 100644
--- a/framework/i18n/DateTimeExtended.php
+++ b/framework/i18n/DateTimeExtended.php
@@ -18,7 +18,7 @@ namespace yii\i18n;
  * Use the original PHP [DateTime](http://php.net/manual/en/class.datetime.php) class instead.
  *
  * @author Carsten Brandt <mail@cebe.cc>
- * @since 2.0
+ * @since 2.0.1
  */
 class DateTimeExtended extends \DateTime
 {
diff --git a/framework/i18n/Formatter.php b/framework/i18n/Formatter.php
index 79d3bbcf33..76073eb1b8 100644
--- a/framework/i18n/Formatter.php
+++ b/framework/i18n/Formatter.php
@@ -82,6 +82,8 @@ class Formatter extends Component
      * Please refer to the [php manual](http://www.php.net/manual/en/timezones.php) for available time zones.
      *
      * It defaults to `UTC` so you only have to adjust this value if you store datetime values in another time zone in your database.
+     *
+     * @since 2.0.1
      */
     public $defaultTimeZone = 'UTC';
     /**