docs(release-notes): disclaimers for 0.3.14 (#14812)

Author: jayacryl

docs/managed-datahub/release-notes/v_0_3_14.md

@@ -34,7 +34,7 @@ New Features:
 - **Custom Home Page** - Starting this release, the new customizable home page will now be enabled for all by default! This new home page allows users with permission to create or edit modules for a custom default experience for all users in your organization. Alternatively, users can individually update their own personal home page to suit their needs. Configure custom asset collections, hierarchy views, documentation, pinned links and more! In this release we've also added a few additional improvements to our previous release including dynamic filters for the Collections module, a popup letting users know when they've forked to their own home page, and auto-expanding Hierarchy modules with one root node.
 - **Custom Summary Tabs** - Introducing a new summary tab experience for Domains, Data Products, Glossary Terms, and Glossary Term Groups! Currently in private beta behind a feature flag, this new tab experience allows users to choose which metadata to highlight and customize helpful modules for their logical assets! In addition, the new summary tab improves upon the existing documentation and links experience with a cleaner look and feel.
 - **Tune Smart Assertions**: A simple UI to see all the metrics Volume and Column Metric Smart Assertions are looking at, and quickly exclude data to update future predictions in real-time.
-- **Bulk-Create Assertions and Subscriptions**: On the Data Health page you can now quickly set up subscriptions and assertions
+- **Bulk-Create Assertions and Subscriptions**: On the Data Health page you can now quickly set up subscriptions and assertions. Note, free slack workspaces may ban your entire workspace for producing too much notification noise.
 - **'By Incidents' view on health dashboard**: The data health dashboard now has a 'by incidents' tab!
 - **Kafka Topic setup**: The `datahub-system-update` container now manages Kafka Topics setup with enhanced configuration flexibility and replaces the `kafka-setup` container.
 - **Logical Models**: Logical Models are now available in a private beta. See [the docs](../../features/feature-guides/logical-models/overview.md) for more details. There is currently a bug, where propagation status is not properly shown on propagated groups in the UI, during ownership propagation.
@@ -51,3 +51,6 @@ Fixes
 - SCIM Integration: Patch operation handling for SCIM endpoints
 
 ## Known Issues
+
+- **Bulk-Create Assertions disclaimer:** Creating over 1,000 assertions will require vertically scaling datahub pods. Particularly, the executor-coordinator and integrations service will need to be scalled vertically. Closely monitor utilization and scale accordingly.
+- **Bulk-Create Subscriptions disclaimer:** Be careful of subscribing to assertion passes, as this may create too much noise and result in dropped messages for Teams and Slack.