ToolJet 3.16 introduces a set of **new features and platform updates**. All changes are **non-breaking**, but there are a few that may require minor layout adjustments. This guide summarise all key updates.
:::tip Before upgrading
We recommend reviewing this guide and testing in a staging environment to evaluate UI differences. For self-hosted users, ensure `.env` changes are applied for audit log retention.
:::
## Suggested Updates (Medium Severity)
### App Builder Changes
These are layout or usability improvements that may require tweaks depending on your app setup.
| App Header | The **Hide app header** option has been deprecated and is now included under the Page & Navigation features. If you previously had the app header hidden, it will now be displayed. Ensure your layout accounts for this change. |
| Dark Mode & Header | **Toggle App Mode icon** disappears if the page menu is hidden. **Workaround**: Use a Button with the `Toggle App Mode` action. |
| Page Menu (Text and icon) | For page menus using the **Text and icon** style, icons will now stay visible when the menu is collapsed. This was not the case before and may slightly affect your layout. |
| Page Menu (Text only and Icon only) | Page menus using **Text only** or **Icon only** styles can no longer be collapsed. If your layout depended on collapsing these, adjustments may be needed. |
| Branding | The app logo and title now appear side-by-side in the top-left corner of the page menu. The separate top bar that previously held the title and logo has been removed. This change may affect layout balance and branding visibility. |
Audit logs are the reports of all the activities done in your ToolJet account. Below are the default retention periods that determine how long these logs are stored, depending on your deployment type.