Twenty Twenty-Five has been now added to the list of available themes to use in blogs.helsinki.fi.
This is an optional theme available to use on your site. No changes have been made to existing sites, and no action is required from users.
Site administrators can activate and explore themes from their site’s dashboard under Appearance → Themes.
(If you do not see the option “Appearance”, please contact your site’s administrator, since lighter roles cannot change themes).
For more information about the new available theme, see the description in the official WordPress.org theme page.