diff --git a/wagtail/admin/panels.py b/wagtail/admin/panels.py
index 462809fbd4..2888071bdc 100644
--- a/wagtail/admin/panels.py
+++ b/wagtail/admin/panels.py
@@ -750,7 +750,9 @@ class FieldPanel(Panel):
 class RichTextFieldPanel(FieldPanel):
     def __init__(self, *args, **kwargs):
         warn(
-            "wagtail.admin.edit_handlers.RichTextFieldPanel is obsolete and should be replaced by wagtail.admin.panels.FieldPanel",
+            "RichTextFieldPanel is no longer required for rich text fields, and should be replaced by FieldPanel. "
+            "RichTextFieldPanel will be removed in a future release. "
+            "See https://docs.wagtail.org/en/stable/releases/3.0.html#removal-of-special-purpose-field-panel-types",
             category=RemovedInWagtail50Warning,
             stacklevel=2,
         )
@@ -1128,7 +1130,9 @@ def reset_page_edit_handler_cache(**kwargs):
 class StreamFieldPanel(FieldPanel):
     def __init__(self, *args, **kwargs):
         warn(
-            "wagtail.admin.edit_handlers.StreamFieldPanel is obsolete and should be replaced by wagtail.admin.panels.FieldPanel",
+            "StreamFieldPanel is no longer required when using StreamField, and should be replaced by FieldPanel. "
+            "StreamFieldPanel will be removed in a future release. "
+            "See https://docs.wagtail.org/en/stable/releases/3.0.html#removal-of-special-purpose-field-panel-types",
             category=RemovedInWagtail50Warning,
             stacklevel=2,
         )
diff --git a/wagtail/documents/edit_handlers.py b/wagtail/documents/edit_handlers.py
index e2e8757b5e..d3f0477513 100644
--- a/wagtail/documents/edit_handlers.py
+++ b/wagtail/documents/edit_handlers.py
@@ -7,7 +7,9 @@ from wagtail.utils.deprecation import RemovedInWagtail50Warning
 class DocumentChooserPanel(FieldPanel):
     def __init__(self, *args, **kwargs):
         warn(
-            "wagtail.documents.edit_handlers.DocumentChooserPanel is obsolete and should be replaced by wagtail.admin.panels.FieldPanel",
+            "DocumentChooserPanel is no longer required for document choosers, and should be replaced by FieldPanel. "
+            "DocumentChooserPanel will be removed in a future release. "
+            "See https://docs.wagtail.org/en/stable/releases/3.0.html#removal-of-special-purpose-field-panel-types",
             category=RemovedInWagtail50Warning,
             stacklevel=2,
         )
diff --git a/wagtail/images/edit_handlers.py b/wagtail/images/edit_handlers.py
index 2096146d4c..109d8f425f 100644
--- a/wagtail/images/edit_handlers.py
+++ b/wagtail/images/edit_handlers.py
@@ -10,7 +10,9 @@ from wagtail.utils.deprecation import RemovedInWagtail50Warning
 class ImageChooserPanel(FieldPanel):
     def __init__(self, *args, **kwargs):
         warn(
-            "wagtail.images.edit_handlers.ImageChooserPanel is obsolete and should be replaced by wagtail.admin.panels.FieldPanel",
+            "ImageChooserPanel is no longer required for image choosers, and should be replaced by FieldPanel. "
+            "ImageChooserPanel will be removed in a future release. "
+            "See https://docs.wagtail.org/en/stable/releases/3.0.html#removal-of-special-purpose-field-panel-types",
             category=RemovedInWagtail50Warning,
             stacklevel=2,
         )
diff --git a/wagtail/snippets/edit_handlers.py b/wagtail/snippets/edit_handlers.py
index 3e6567afaf..5ce3e7f5ea 100644
--- a/wagtail/snippets/edit_handlers.py
+++ b/wagtail/snippets/edit_handlers.py
@@ -7,7 +7,9 @@ from wagtail.utils.deprecation import RemovedInWagtail50Warning
 class SnippetChooserPanel(FieldPanel):
     def __init__(self, *args, **kwargs):
         warn(
-            "wagtail.snippets.edit_handlers.SnippetChooserPanel is obsolete and should be replaced by wagtail.admin.panels.FieldPanel",
+            "SnippetChooserPanel is no longer required for snippet choosers, and should be replaced by FieldPanel. "
+            "SnippetChooserPanel will be removed in a future release. "
+            "See https://docs.wagtail.org/en/stable/releases/3.0.html#removal-of-special-purpose-field-panel-types",
             category=RemovedInWagtail50Warning,
             stacklevel=2,
         )