diff --git a/src/black/linegen.py b/src/black/linegen.py
index 5ef3bbd1705..507e860190f 100644
--- a/src/black/linegen.py
+++ b/src/black/linegen.py
@@ -281,7 +281,9 @@ def visit_match_case(self, node: Node) -> Iterator[Line]:
 
     def visit_suite(self, node: Node) -> Iterator[Line]:
         """Visit a suite."""
-        if self.mode.is_pyi and is_stub_suite(node):
+        if (
+            self.mode.is_pyi or Preview.dummy_implementations in self.mode
+        ) and is_stub_suite(node):
             yield from self.visit(node.children[2])
         else:
             yield from self.visit_default(node)
@@ -296,7 +298,9 @@ def visit_simple_stmt(self, node: Node) -> Iterator[Line]:
 
         is_suite_like = node.parent and node.parent.type in STATEMENT
         if is_suite_like:
-            if self.mode.is_pyi and is_stub_body(node):
+            if (
+                self.mode.is_pyi or Preview.dummy_implementations in self.mode
+            ) and is_stub_body(node):
                 yield from self.visit_default(node)
             else:
                 yield from self.line(+1)
@@ -305,7 +309,7 @@ def visit_simple_stmt(self, node: Node) -> Iterator[Line]:
 
         else:
             if (
-                not self.mode.is_pyi
+                not (self.mode.is_pyi or Preview.dummy_implementations in self.mode)
                 or not node.parent
                 or not is_stub_suite(node.parent)
             ):
diff --git a/src/black/mode.py b/src/black/mode.py
index 4d979afd84d..282c1669da7 100644
--- a/src/black/mode.py
+++ b/src/black/mode.py
@@ -182,6 +182,7 @@ class Preview(Enum):
     skip_magic_trailing_comma_in_subscript = auto()
     wrap_long_dict_values_in_parens = auto()
     wrap_multiple_context_managers_in_parens = auto()
+    dummy_implementations = auto()
 
 
 class Deprecated(UserWarning):