No, there are no changes on this front.
As noted, the display is typically invoked as an option from a menu, and so it doesn't really have any way to configure it. It would need an entirely new action, or new UI.
And to allow all the customisations would require a lot of code and options, so more likely I would expand the Custom HTML Prompt to allow transparent backgrounds and borderless windows (if any of that turns out to be possible).