Release v66.4.2

66.4.2 - March 31, 2026

Added

salesforcedx-aura-language-server

salesforcedx-lightning-lsp-common

salesforcedx-lwc-language-server

salesforcedx-vscode-lightning

salesforcedx-vscode-lwc

• We replaced LWC and Aura server-ready popup notifications with a shared custom ready notification and in-editor language status items. (PR #7054)

salesforcedx-vscode-core

• We added defaultLwcLanguage as a valid key to the sfdx-project.json schema. (PR #7109)

• We renamed WebApplication to UiBundle for the React External App and React Internal App templates in SFDX: Create Project. (PR #7100)

salesforcedx-vscode-expanded

• We added the Salesforce Live Preview extension to the Salesforce Extension Pack (Expanded), enabling developers to preview Lightning Web Components directly in VS Code with live updates on save. (PR #7058)

salesforcedx-vscode-soql

• We added a "Run Query" code lens in .soql files and a new command SFDX: Execute SOQL Query with Current File in the command palette; the previous SFDX: Execute SOQL Query... command has been removed. (PR #7089)

• We added a "Get Query Plan" button to the SOQL Builder UI. (PR #7094)

Fixed

salesforcedx-lightning-lsp-common

• We fixed a bug where jsconfig.json files were repeatedly modified with duplicate lines on VS Code startup. (PR #7087, ISSUE #7084)

salesforcedx-aura-language-server

salesforcedx-lwc-language-server

salesforcedx-vscode-lwc

• We fixed a bug where changes to CustomLabels.labels-meta.xml were not reflected in .sfdx/typings/lwc/customlabels.d.ts. (PR #7065)

salesforcedx-vscode-core

• We made some changes under the hood. (PR #7107)

• We fixed a bug where source path-based deploy/retrieve ignored the sourceApiVersion set in sfdx-project.json. (PR #7106)

• We fixed a bug where _ in Apex test method names were incorrectly rendered as \_. (PR #7091, ISSUE #7075)

• We fixed a bug where the .sfdx folder could be created outside a Salesforce project during extension startup. (PR #7095)