Starting changelog (#775)

Author: tanushree-sharma

docs/changelog/index.md

@@ -0,0 +1,24 @@
+---
+sidebar_position: 1
+---
+
+import { RegionalUrl } from "@site/src/components/RegionalUrls";
+
+# Changelog
+
+What's new in LangSmith — new features, enhancements, and bugs fixed — organized by release date and release version. Looking for just the major product updates & highlights? [Check out our website feed.](https://changelog.langchain.com/?categories=cat_FvjDMlZoyaKkX)
+
+## 2025‑04‑28
+
+### LangSmith v0.10.31
+
+#### LangSmith
+
+- Directly [add example metadata](/evaluation/how_to_guides/manage_datasets_in_application#edit-example-metadata) when editing examples in the UI
+- Prompt previews now render when [running an experiment in the UI](/evaluation/how_to_guides/run_evaluation_from_prompt_playground) or configuring an [online evaluator](/observability/how_to_guides/online_evaluations) with f-string prompts
+- [Group by](/evaluation/how_to_guides/analyze_single_experiment#group-results-by-metadata) [dataset split](/evaluation/how_to_guides/manage_datasets_in_application#create-and-manage-dataset-splits) when analyzing experiment results
+
+#### LangGraph Studio
+
+- Improved layout when expanding [subgraphs](https://langchain-ai.github.io/langgraph/how-tos/subgraph/?h=subgraph)
+- Render errors and [interrupts](https://langchain-ai.github.io/langgraph/concepts/human_in_the_loop/?h=#interrupt) correctly in Studio Chat UI

docs/evaluation/how_to_guides/manage_datasets_in_application.mdx

@@ -141,19 +141,19 @@ you can select and unselect splits for the selected examples, or create a new sp
 
 ### Edit example metadata
 
-You can add metadata to your examples by clicking on an example and then clicking on the "Metadata" tab in the side pane.
+You can add metadata to your examples by clicking on an example and then clicking "Edit" on the top righthand side of the popover.
 From this page, you can update/delete existing metadata, or add new metadata. You may use this to store information about
-your examples, such as tags or version info, which you can [then filter by when you call `list_examples` in the SDK](./manage_datasets_programmatically#list-examples-by-metadata).
+your examples, such as tags or version info, which you can then [group by](./analyze_single_experiment#group-results-by-metadata) when analyzing experiment results or [filter by](./manage_datasets_programmatically#list-examples-by-metadata) when you call `list_examples` in the SDK.
 
-![Add Metadata](./static/add_metadata.png)
+![Add Metadata](./static/add_metadata.gif)
 
 ### Filter examples
 
-You can filter examples by metadata key/value or full-text search. To filter examples, click "Filter" in the top left of the table:
+You can filter examples by split, metadata key/value or perform full-text search over examples. These filtering options are available to the top left of the examples table. 
+- **Filter by split**: Select split > Select a split to filter by
+- **Filter by metadata**: Filters > Select "Metadata" from the dropdown > Select the metadata key and value to filter on
+- **Full-text search**: Filters > Select "Full Text" from the dropdown > Enter your search criteria 
 
-![Filter Examples](./static/filter_examples.png)
-
-Next, click "Add filter" and select "Full Text" or "Metadata" from the resulting dropdown. You may add multiple filters, and only examples that satisfy all of the
-filters will be displayed in the table.
+You may add multiple filters, and only examples that satisfy all of the filters will be displayed in the table.
 
 ![Filters Applied to Examples](./static/filters_applied.png)

docs/evaluation/how_to_guides/static/add_metadata.gif

@@ -277,6 +277,20 @@ const sidebars = {
       ],
       link: { type: "doc", id: "reference/index" },
     },
+    {
+      type: "category",
+      label: "Changelog",
+      collapsed: false,
+      collapsible: false,
+      items: [
+        {
+          type: "autogenerated",
+          dirName: "reference",
+          className: "hidden",
+        },
+      ],
+      link: { type: "doc", id: "changelog/index" },
+    },
   ],
 };