Customization
- Build More Robust Integrations with Increased External Services Limits
https://help.salesforce.com/s/articleView?id=release-notes.rn_ext_services_limits.htm&release=258&type=5 - Upload and Download Files with External Services Binary File Support
https://help.salesforce.com/s/articleView?id=release-notes.rn_ext_services_binary_file_support.htm&release=258&type=5
Development
- Use LWC Components for Local Actions in Screen Flows
https://help.salesforce.com/s/articleView?id=release-notes.rn_lc_lwc_local_actions.htm&release=258&type=5
https://developer.salesforce.com/docs/platform/lwc/guide/use-flow-local-actions.html - Extend Salesforce Experiences to External Apps with Lightning Out 2.0
https://help.salesforce.com/s/articleView?id=release-notes.rn_lc_lwc_lightning_out.htm&release=258&type=5 - Elevate Third-Party Scripts with LWS Trusted Mode
https://help.salesforce.com/s/articleView?id=release-notes.rn_lc_lws_trusted_mode.htm&release=258&type=5 - Standardize Apex Documentation by Using the ApexDoc Comment Format
https://help.salesforce.com/s/articleView?id=release-notes.rn_apex_apexdoc.htm&release=258&type=5 - Use Access Modifiers on Abstract and Override Methods
https://help.salesforce.com/s/articleView?id=release-notes.rn_apex_access_modifier.htm&release=258&type=5 - Support for OAuth 2.0 Device Flow Authentication Is Being Removed in Data Loader on September 2, 2025
https://help.salesforce.com/s/articleView?id=release-notes.rn_data_loader_oauth_change.htm&release=258&type=5 - Update Instanced URLs in API Traffic (Release Update)
https://help.salesforce.com/s/articleView?id=release-notes.rn_update_instanced_urls_in_api_traffic.htm&release=258&type=5 - New and Changed Modules for Lightning Web Components (lightning/graphql; lightning/uiGraphQLApi deprecated)
https://help.salesforce.com/s/articleView?id=release-notes.rn_lwc_modules.htm&release=258&type=5 - Enhance Invocable Apex Configuration Designs with New Action Extension Metadata
https://help.salesforce.com/s/articleView?id=release-notes.rn_automate_flow_extend_extended_metadata_invocable_action.htm&release=258&type=5 - Streamline Apex and Flow Test Retrieval and Execution
https://help.salesforce.com/s/articleView?id=release-notes.rn_apex_unified_testing.htm&release=258&type=5 - Unify Testing with the Test Discovery and Test Runner APIs
https://help.salesforce.com/s/articleView?id=release-notes.rn_api_tooling_unified_testing.htm&release=258&type=5
Flows
- Trigger a Flow When a File Is Attached to a Record (Generally Available)
https://help.salesforce.com/s/articleView?id=release-notes.rn_automate_flow_mfi_automate_flows_with_file_attachments.htm&release=258&type=5 - Jen’s Top Winter ’26 Features for Admins
https://admin.salesforce.com/blog/2025/jens-top-winter-26-features-for-admins
Security, Identity and Privacy
- Stage and Rotate External Client App Credentials
https://help.salesforce.com/s/articleView?id=release-notes.rn_security_stage_rotate_eca_credentials.htm&release=258&type=5 - Simplify Integrations with External Auth Identity Provider Support for Client Credentials
https://help.salesforce.com/s/articleView?id=release-notes.rn_security_named_credentials_xidp_client_creds.htm&release=258&type=5 - Track Agent Activity with Real-Time Events
https://help.salesforce.com/s/articleView?id=release-notes.rn_security_em_rte_agent_activity.htm&release=258&type=5 - Get Detailed Visibility Into Every Platform Action
https://help.salesforce.com/s/articleView?id=release-notes.rn_security_other_platform_tracing.htm&release=258&type=5
Hyperforce
- 🎉 🎉 🎉 🕺 🕺 🕺 Encrypt Your Database With Salesforce Database Encryption (Generally Available)
https://help.salesforce.com/s/articleView?id=release-notes.rn_encrypt_your_database_with_salesforce_database_encryption.htm&release=258&type=5
