• VSCode Version: Code - Insiders 1.6.0-insider (602155b, 2016-10-01T00:34:33.697Z)
• OS Version: Linux x64 4.4.0-38-generic
• Extensions: EditorConfig.EditorConfig-0.3.3, Tyriar.lorem-ipsum-1.0.0, Tyriar.sort-lines-1.1.0, Tyriar.theme-glacier-0.0.10, Tyriar.vscode-terminal-here-0.0.5, christian-kohler.path-intellisense-1.0.2, cssho.vscode-svgviewer-1.2.0, dbaeumer.vscode-eslint-1.0.7, eg2.tslint-0.5.39, felipecaputo.git-project-manager-0.1.15, gerane.Theme-Wombat-0.0.2, ms-vscode.csharp-1.4.1, ms-vscode.typescript-javascript-grammar-0.0.3, rebornix.Ruby-0.8.0, rebornix.nova-0.0.5, redhat.java-0.0.4, ryu1kn.annotator-0.10.0, ryzngard.vscode-header-source-1.0.4

https://marketplace.visualstudio.com/items?itemName=Tyriar.terminal-tabs is an example of an extension that has "preview": true in its package.json which shows up on web but not in product.