This release will be available starting May 17, 2019 and affects several themes.
IMPORTANT: This release is only available for Office 365 Modern Themes.
New features
SharePoint Framework (SPFx)
Gain granular control over how forms inherit styling and properties.
Customize the user experience by easily modifying the placeholder text displayed within the search bar.
Choose a more streamlined and minimalist design for your search bar with the new compact layout option.
The global search functionality now conveniently appears within a pop-up window, improving the search workflow and user focus.
Set a custom maximum number of search results to be displayed, allowing you to tailor the search experience to your specific needs.
Exercise precise control over your site's interface by individually hiding specific quick actions that you don't wish to display.
Easily transfer your theme configurations. You can now import settings from, or export settings to a Hub site.
New options are available to pull navigation data directly from Global or Current navigation sources.
A new dynamic source automatically selects Global navigation for Team Sites and Current navigation for Communication Sites.
When using Global or Current navigation sources, you can now opt to inherit associated metadata.
Sub-menus now intelligently become scrollable when there isn't enough room to fit all items on the page.
You now have the flexibility to position your Hub site navigation prominently above the main theme header.
The default SharePoint Hub navigation can now be hidden.
For Team Sites, you can now hide the native sidebar.
Fixes
SharePoint Framework (SPFx)
Fixed an issue where the theme was not consistently applying to newly created page templates. Your chosen theme will now correctly display on all new pages, ensuring a uniform look and feel.
Addressed an intermittent issue where the page would sometimes go blank during soft navigation.