diff --git a/includes/admin.form.inc b/includes/admin.form.inc
index 9d0f6e7e..69f09fd2 100644
--- a/includes/admin.form.inc
+++ b/includes/admin.form.inc
@@ -83,6 +83,16 @@ function islandora_repository_admin(array $form, array &$form_state) {
           ),
         ),
       ),
+      'islandora_ds_replace_exclude' => array(
+        '#type' => 'fieldset',
+        '#title' => t('Excluded DSID'),
+        'islandora_ds_replace_exclude_enforced' => array(
+          '#type' => 'textfield',
+          '#title' => t('Enforce DSID restrictions'),
+          '#description' => t("A comma seperated list, allowing administrator to restrict user's access to replace a versionable datastreams latest version"),
+          '#default_value' => variable_get('islandora_ds_replace_exclude_enforced', 'RELS-EXT,RELS-INT'),
+        ),
+      ),
     ),
   );
   return system_settings_form($form);
diff --git a/includes/datastream.version.inc b/includes/datastream.version.inc
index ecef019d..85f20c0e 100644
--- a/includes/datastream.version.inc
+++ b/includes/datastream.version.inc
@@ -231,6 +231,109 @@ function islandora_revert_datastream_version_form_submit(array $form, array &$fo
   $form_state['redirect'] = "islandora/object/{$islandora_object->id}/datastream/{$datastream_to_revert->id}/version";
 }
 
+/**
+ * The admin replace datastream form.
+ *
+ * @param array $form
+ *   The Drupal form.
+ * @param array $form_state
+ *   The Drupal form state.
+ * @param AbstractDatastream $datastream
+ *   The datastream to be updated.
+ *
+ * @return array
+ *   The drupal form definition.
+ */
+function islandora_datastream_version_replace_form($form, &$form_state, AbstractDatastream $datastream) {
+  module_load_include('inc', 'islandora', 'includes/content_model');
+  module_load_include('inc', 'islandora', 'includes/utilities');
+
+  $object = islandora_object_load($datastream->parent->id);
+  $form_state['object_id'] = $object->id;
+  $form_state['dsid'] = $datastream->id;
+  $form_state['object'] = $object;
+  $extensions = islandora_get_datastreams_requirements_from_models($object->models);
+  $mime_detect = new MimeDetect();
+  $ext = array();
+  foreach ($extensions[$datastream->id]['mime'] as $key => $value) {
+    $str = $mime_detect->getExtension($value);
+    array_push($ext, $str);
+  }
+  $comma = count($ext) > 1 ? "," : "";
+  $ext = array(implode($comma, $ext));
+  $upload_size = min((int) ini_get('post_max_size'), (int) ini_get('upload_max_filesize'));
+  return array(
+    'dsid_fieldset' => array(
+      '#type' => 'fieldset',
+      '#title' => t("Update datastream with latest version"),
+      '#collapsible' => FALSE,
+      '#collapsed' => FALSE,
+      'dsid' => array(
+        '#type' => 'markup',
+        '#markup' => "<div>DSID: <b>$datastream->id</b></div>",
+      ),
+      'label' => array(
+        '#type' => 'markup',
+        '#markup' => "<div>Label: <b>$datastream->label</b></div>",
+      ),
+      'file' => array(
+        '#type' => 'managed_file',
+        '#required' => TRUE,
+        '#title' => t('Upload Document'),
+        '#size' => 64,
+        '#description' => t('Select a file to upload.<br/>Files must be less than <strong>@size MB.</strong>', array('@size' => $upload_size)),
+        '#upload_location' => 'temporary://',
+        '#upload_validators' => array(
+          'file_validate_extensions' => $ext,
+          // Assume its specified in MB.
+          'file_validate_size' => array($upload_size * 1024 * 1024),
+        ),
+      ),
+      'submit' => array(
+        '#type' => 'submit',
+        '#value' => t('Add Contents'),
+      ),
+    ),
+  );
+}
+
+/**
+ * Submit handler for the replace datastream form.
+ *
+ * Adds a new datastream version as latest.
+ *
+ * @param array $form
+ *   The Drupal form.
+ * @param array $form_state
+ *   The Drupal form state.
+ */
+function islandora_datastream_version_replace_form_submit($form, &$form_state) {
+  $object = islandora_object_load($form_state['object_id']);
+  $form_state['redirect'] = "islandora/object/{$object->id}";
+  $file = file_load($form_state['values']['file']);
+  try {
+    $ds = $object[$form_state['dsid']];
+    $ds->mimetype = $file->filemime;
+    $path = drupal_realpath($file->uri);
+    $ds->setContentFromFile($path);
+    file_delete($file);
+  }
+  catch (exception $e) {
+    drupal_set_message(t('An error occurred during datastream updates. See watchlog for more information.'), 'error');
+    watchdog('islandora',
+      'Failed to add new versionable datastream.<br/>code: @code<br/>message: @msg',
+      array(
+        '@code' => $e->getCode(),
+        '@msg' => $e->getMessage(),
+      ),
+      WATCHDOG_ERROR
+    );
+    file_delete($file);
+    return;
+  }
+  drupal_set_message(t("Successfully Updated Datastream"));
+}
+
 /**
  * Gets Audit datastream values from foxml.
  *
diff --git a/islandora.install b/islandora.install
index caff7d75..f37894e9 100644
--- a/islandora.install
+++ b/islandora.install
@@ -43,6 +43,11 @@ function islandora_install() {
 function islandora_uninstall() {
   module_load_include('inc', 'islandora', 'includes/solution_packs');
   islandora_install_solution_pack('islandora', 'uninstall');
+  // Add new variables to clean up.
+  $variables = array(
+    'islandora_ds_replace_exclude_enforced',
+  );
+  array_walk($variables, 'variable_del');
 }
 
 /**
diff --git a/islandora.module b/islandora.module
index 21c902c2..1fa1148f 100644
--- a/islandora.module
+++ b/islandora.module
@@ -37,7 +37,7 @@ define('ISLANDORA_VIEW_DATASTREAM_HISTORY', 'view old datastream versions');
 define('ISLANDORA_MANAGE_DELETED_OBJECTS', 'manage deleted objects');
 define('ISLANDORA_REVERT_DATASTREAM', 'revert to old datastream');
 define('ISLANDORA_REGENERATE_DERIVATIVES', 'regenerate derivatives for an object');
-
+define('ISLANDORA_REPLACE_DATASTREAM_CONTENT', 'replace a datastream with new content, preserving version history');
 
 // Hooks.
 define('ISLANDORA_VIEW_HOOK', 'islandora_view_object');
@@ -317,6 +317,16 @@ function islandora_menu() {
     'access arguments' => array(ISLANDORA_VIEW_DATASTREAM_HISTORY, 4),
     'load arguments' => array(2),
   );
+  $items['islandora/object/%islandora_object/datastream/%islandora_datastream/replace'] = array(
+    'title' => 'Replace Datastream',
+    'page arguments' => array('islandora_datastream_version_replace_form', 4),
+    'page callback' => 'drupal_get_form',
+    'file' => 'includes/datastream.version.inc',
+    'type' => MENU_CALLBACK,
+    'access callback' => 'islandora_datastream_access',
+    'access arguments' => array(ISLANDORA_REPLACE_DATASTREAM_CONTENT, 4),
+    'load arguments' => array(2),
+  );
   $items['islandora/object/%islandora_object/datastream/%islandora_datastream/version/%/delete'] = array(
     'title' => 'Delete datastream version',
     'page arguments' => array('islandora_delete_datastream_version_form', 4, 6),
@@ -516,6 +526,10 @@ function islandora_theme() {
       'file' => 'theme/theme.inc',
       'variables' => array('datastream' => NULL),
     ),
+    'islandora_datastream_replace_link' => array(
+      'file' => 'theme/theme.inc',
+      'variables' => array('datastream' => NULL),
+    ),
     'islandora_dublin_core_display' => array(
       'file' => 'theme/theme.inc',
       'template' => 'theme/islandora-dublin-core-display',
@@ -594,6 +608,10 @@ function islandora_permission() {
       'title' => t('Regenerate derivatives'),
       'description' => t('Regenerate derivatives for an object or per datastream.'),
     ),
+    ISLANDORA_REPLACE_DATASTREAM_CONTENT => array(
+      'title' => t('Replace datastreams'),
+      'description' => t('Add new datastream content as latest version.'),
+    ),
   );
 }
 
@@ -699,6 +717,7 @@ function islandora_forms($form_id) {
  *   otherwise.
  */
 function islandora_user_access($object_or_datastream, array $permissions, $content_models = array(), $access_any = TRUE, $user = NULL) {
+
   module_load_include('inc', 'islandora', 'includes/utilities');
   $is_repository_accessible = &drupal_static(__FUNCTION__);
 
diff --git a/theme/theme.inc b/theme/theme.inc
index feac06b2..c81a918d 100644
--- a/theme/theme.inc
+++ b/theme/theme.inc
@@ -25,7 +25,7 @@ function islandora_preprocess_islandora_default_edit(array &$variables) {
     $header[] = array('data' => t('Versions'));
   }
 
-  $header[] = array('data' => t('Operations'), 'colspan' => '4');
+  $header[] = array('data' => t('Operations'), 'colspan' => '5');
 
   $table_attributes = array('class' => array('manage-datastreams'));
   $rows = array();
@@ -60,6 +60,13 @@ function islandora_preprocess_islandora_default_edit(array &$variables) {
           'datastream' => $ds,
         )),
       );
+      // Add new datastream content as the lastest version.
+      $row[] = array(
+        'class' => 'datastream-replace',
+        'data' => theme('islandora_datastream_replace_link', array(
+          'datastream' => $ds,
+        )),
+      );
     }
     $row[] = array(
       'class' => 'datastream-download',
@@ -436,6 +443,27 @@ function theme_islandora_datastream_version_link(array $vars) {
   }
 }
 
+/**
+ * Renders a link to take you to the datastream add latest version page.
+ *
+ * @param array $vars
+ *   An array containing:
+ *     - datastream: An AbstractDatastream to generate a new version.
+ *
+ * @return string
+ *   Markup.
+ */
+function theme_islandora_datastream_replace_link(array $vars) {
+  $datastream = $vars['datastream'];
+  if (islandora_datastream_access(ISLANDORA_REPLACE_DATASTREAM_CONTENT, $datastream)) {
+    $var_string = variable_get("islandora_ds_replace_exclude_enforced", "RELS-EXT,RELS-INT");
+    $replace_exclude = explode(",", $var_string);
+    if (!in_array($datastream->id, $replace_exclude)) {
+      return l(t('replace'), "islandora/object/{$datastream->parent->id}/datastream/{$datastream->id}/replace");
+    }
+  }
+}
+
 /**
  * Renders a link that will re-create derivatives for a datastream.
  *