diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 52bcdde15..e7f082a34 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -7,6 +7,25 @@ These are notable changes in XBlock.
 Unreleased
 ----------
 
+1.9.0 - 2023-11-20
+------------------
+
+* Support for `OEP-58 JavaScript translations <https://docs.openedx.org/en/latest/developers/concepts/oep58.html>`_:
+
+  * Introduced abstract JavaScript translations support by adding the ``i18n_js_namespace`` property and
+    ``get_i18n_js_namespace`` method to the ``SharedBlockBase``. This allows XBlocks to define a JavaScript namespace
+    so the XBlock i18n runtime service can manage and load JavaScript translations for XBlocks.
+
+  * Added the stub ``get_javascript_i18n_catalog_url`` method to the ``NullI18nService`` class to be implemented
+    by runtime services.
+
+  * See the `edx-platform atlas translations proposal <https://github.com/openedx/edx-platform/blob/master/docs/decisions/0019-oep-58-atlas-translations-design.rst>`_
+
+1.8.1 - 2023-10-07
+------------------
+
+* Python Requirements Update
+* Update setup.py, adds required packages
 
 1.8.0 - 2023-09-25
 ------------------
diff --git a/xblock/__init__.py b/xblock/__init__.py
index 221a539ce..e230e9dc9 100644
--- a/xblock/__init__.py
+++ b/xblock/__init__.py
@@ -27,4 +27,4 @@ def __init__(self, *args, **kwargs):
 # without causing a circular import
 xblock.fields.XBlockMixin = XBlockMixin
 
-__version__ = '1.8.1'
+__version__ = '1.9.0'
diff --git a/xblock/core.py b/xblock/core.py
index 753c3cf71..407b5ee68 100644
--- a/xblock/core.py
+++ b/xblock/core.py
@@ -55,6 +55,7 @@ class SharedBlockBase(Plugin):
 
     resources_dir = ''
     public_dir = 'public'
+    i18n_js_namespace = None
 
     @classmethod
     def get_resources_dir(cls):
@@ -70,6 +71,17 @@ def get_public_dir(cls):
         """
         return cls.public_dir
 
+    @classmethod
+    def get_i18n_js_namespace(cls):
+        """
+        Gets the JavaScript translations namespace for this XBlock.
+
+        Returns:
+            str: The JavaScript namespace for this XBlock.
+            None: If this doesn't have JavaScript translations configured.
+        """
+        return cls.i18n_js_namespace
+
     @classmethod
     def open_local_resource(cls, uri):
         """
diff --git a/xblock/runtime.py b/xblock/runtime.py
index 209d95992..d9f9efd86 100644
--- a/xblock/runtime.py
+++ b/xblock/runtime.py
@@ -1357,6 +1357,16 @@ def strftime(self, dtime, format):  # pylint: disable=redefined-builtin
         timestring = dtime.strftime(format)
         return timestring
 
+    def get_javascript_i18n_catalog_url(self):
+        """
+        Return the URL to the JavaScript i18n catalog file.
+
+        This method returns None in NullI18nService. When implemented in
+        a runtime, it should return the URL to the JavaScript i18n catalog so
+        it can be loaded in frontends.
+        """
+        return None
+
     @property
     def ugettext(self):
         """
diff --git a/xblock/test/test_core.py b/xblock/test/test_core.py
index b1d919b51..9f469850b 100644
--- a/xblock/test/test_core.py
+++ b/xblock/test/test_core.py
@@ -196,6 +196,39 @@ class FieldTester(XBlock):
     assert {1} == field_tester._field_data.get(field_tester, 'field_d')
 
 
+def test_shared_block_base_defaults():
+    """
+    Test default values and static methods provided by the SharedBlockBase class.
+    """
+    class DefaultsTester(XBlock):
+        pass
+
+    defaults_tester = DefaultsTester(
+        TestRuntime(services={'field-data': DictFieldData({})}),
+        scope_ids=Mock(spec=ScopeIds)
+    )
+
+    # Testing the default static method return values of SharedBlockBase
+    assert defaults_tester.get_resources_dir() == ''
+    assert defaults_tester.get_public_dir() == 'public'
+    assert defaults_tester.get_i18n_js_namespace() is None
+
+    class CustomizedValuesTester(XBlock):
+        resources_dir = 'custom_resource_dir'
+        public_dir = 'another_public_dir'
+        i18n_js_namespace = 'CustomizedValuesTesterI18N'
+
+    customized_values_tester = CustomizedValuesTester(
+        TestRuntime(services={'field-data': DictFieldData({})}),
+        scope_ids=Mock(spec=ScopeIds),
+    )
+
+    # Testing the customized static method return values of SharedBlockBase
+    assert customized_values_tester.get_resources_dir() == 'custom_resource_dir'
+    assert customized_values_tester.get_public_dir() == 'another_public_dir'
+    assert customized_values_tester.get_i18n_js_namespace() == 'CustomizedValuesTesterI18N'
+
+
 def test_mutable_none_values():
     # Check that fields with values intentionally set to None
     # save properly.
diff --git a/xblock/test/test_runtime.py b/xblock/test/test_runtime.py
index c7eb67773..d02bf02e9 100644
--- a/xblock/test/test_runtime.py
+++ b/xblock/test/test_runtime.py
@@ -523,6 +523,9 @@ def assert_equals_unicode(str1, str2):
         assert_equals_unicode("Feb 14, 2013 at 22:30", i18n.strftime(when, "DATE_TIME"))
         assert_equals_unicode("10:30:17 PM", i18n.strftime(when, "TIME"))
 
+        # Runtimes are expected to implement this method though.
+        assert i18n.get_javascript_i18n_catalog_url() is None, 'NullI18nService does not implement this method.'
+
         # secret_service is available.
         assert self.runtime.service(self, "secret_service") == 17