diff --git a/docs/guides/sql-tap.md b/docs/guides/sql-tap.md
index 97975c611..55182c155 100644
--- a/docs/guides/sql-tap.md
+++ b/docs/guides/sql-tap.md
@@ -1,10 +1,14 @@
 # Building SQL taps
 
-## Default type mapping
+## Mapping SQL types to JSON Schema
+
+Starting with version `0.41.0`, the Meltano Singer SDK provides a clean way to map SQL types to JSON Schema. This is useful when the SQL dialect you are using has custom types that need to be mapped accordingly to JSON Schema.
+
+### Default type mapping
 
 The Singer SDK automatically handles the most common SQLAlchemy column types, using [`functools.singledispatchmethod`](inv:python:py:class:#functools.singledispatchmethod) to process each type. See the [`SQLToJSONSchema`](connectors.sql.SQLToJSONSchema) reference documentation for details.
 
-## Custom type mapping
+### Custom type mapping
 
 If the class above doesn't cover all the types supported by the SQLAlchemy dialect in your tap, you can subclass it and override or extend with a new method for the type you need to support:
 
diff --git a/singer_sdk/connectors/sql.py b/singer_sdk/connectors/sql.py
index 949ec523f..87eb1eb98 100644
--- a/singer_sdk/connectors/sql.py
+++ b/singer_sdk/connectors/sql.py
@@ -114,6 +114,8 @@ class SQLToJSONSchema:
     """SQLAlchemy to JSON Schema type mapping helper.
 
     This class provides a mapping from SQLAlchemy types to JSON Schema types.
+
+    .. versionadded:: 0.41.0
     """
 
     @functools.singledispatchmethod
@@ -171,6 +173,10 @@ def string_to_jsonschema(self, column_type: sa.types.String) -> dict:  # noqa: P
 
         Args:
             column_type (:column_type:`String`): The column type.
+
+        .. versionchanged:: 0.41.0
+           The :column_type:`length <String.params.length>` attribute is now used to
+           determine the maximum length of the string type.
         """
         if column_type.length:
             return th.StringType(max_length=column_type.length).type_dict  # type: ignore[no-any-return]
@@ -241,12 +247,11 @@ def logger(self) -> logging.Logger:
 
     @functools.cached_property
     def sql_to_jsonschema(self) -> SQLToJSONSchema:
-        """Return the type mapper object.
+        """The SQL-to-JSON type mapper object for this SQL connector.
 
-        Override this method to provide a custom mapping for your SQL dialect.
+        Override this property to provide a custom mapping for your SQL dialect.
 
-        Returns:
-            The type mapper object.
+        .. versionadded:: 0.41.0
         """
         return SQLToJSONSchema()
 
@@ -380,6 +385,10 @@ def to_jsonschema_type(
 
         Returns:
             The JSON Schema representation of the provided type.
+
+        .. versionchanged:: 0.40.0
+           Support for SQLAlchemy type classes and strings in the ``sql_type`` argument
+           was deprecated. Please pass a SQLAlchemy type object instead.
         """
         if isinstance(sql_type, sa.types.TypeEngine):
             return self.sql_to_jsonschema.to_jsonschema(sql_type)
@@ -445,6 +454,9 @@ def get_fully_qualified_name(
 
         Returns:
             The fully qualified name as a string.
+
+        .. versionchanged:: 0.40.0
+           A ``FullyQualifiedName`` object is now returned.
         """
         return FullyQualifiedName(
             table=table_name,  # type: ignore[arg-type]
diff --git a/singer_sdk/streams/rest.py b/singer_sdk/streams/rest.py
index 76e2abf5d..4eef8e268 100644
--- a/singer_sdk/streams/rest.py
+++ b/singer_sdk/streams/rest.py
@@ -157,6 +157,8 @@ def user_agent(self) -> str:
 
         Returns:
             The user agent string.
+
+        .. versionadded:: 0.40.0
         """
         return self.config.get(
             "user_agent",