Enable DAG Visualization feature flag by default

app/controllers/projects/pipelines_controller.rb

@@ -15,7 +15,7 @@ class Projects::PipelinesController < Projects::ApplicationController
     push_frontend_feature_flag(:junit_pipeline_view, project)
     push_frontend_feature_flag(:build_report_summary, project)
     push_frontend_feature_flag(:filter_pipelines_search, project, default_enabled: true)
-    push_frontend_feature_flag(:dag_pipeline_tab, project, default_enabled: false)
+    push_frontend_feature_flag(:dag_pipeline_tab, project, default_enabled: true)
     push_frontend_feature_flag(:pipelines_security_report_summary, project)
   end
   before_action :ensure_pipeline, only: [:show]

doc/ci/directed_acyclic_graph/index.md

@@ -82,10 +82,10 @@ are certain use cases that you may need to work around. For more information:
 ## DAG Visualization
 
 > - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/215517) in GitLab 13.1 as a [Beta feature](https://about.gitlab.com/handbook/product/#beta).
-> - It's deployed behind a feature flag, disabled by default.
+> - It was deployed behind a feature flag, disabled by default.
+> - It became [enabled by default](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/36802) in 13.2.
 > - It's enabled on GitLab.com.
-> - It's not recommended for production use.
-> - For GitLab self-managed instances, GitLab administrators can opt to [enable it](#enable-or-disable-dag-visualization-core-only)
+> - For GitLab self-managed instances, GitLab administrators can opt to [disable it](#enable-or-disable-dag-visualization-core-only).
 
 The DAG visualization makes it easier to visualize the relationships between dependent jobs in a DAG. This graph will display all the jobs in a pipeline that need or are needed by other jobs. Jobs with no relationships are not displayed in this view.
 
@@ -97,15 +97,15 @@ Clicking a node will highlight all the job paths it depends on.
 
 ### Enable or disable DAG Visualization **(CORE ONLY)**
 
-DAG Visualization is under development and requires more testing, but is being made available as a beta features so users can check its limitations and uses.
+DAG Visualization is under development, but is being made available as a beta feature so users can check its limitations and uses.
 
-It is deployed behind a feature flag that is **disabled by default**.
+It is deployed behind a feature flag that is **enabled by default**.
 [GitLab administrators with access to the GitLab Rails console](../../administration/feature_flags.md)
-can opt to enable it for your instance:
+can opt to disable it for your instance:
 
 ```ruby
 # Instance-wide
-Feature.enable(:dag_pipeline_tab)
+Feature.disable(:dag_pipeline_tab)
 # or by project
-Feature.enable(:dag_pipeline_tab, Project.find(<project id>))
+Feature.disable(:dag_pipeline_tab, Project.find(<project id>))
 ```