Are more font variants in the pipeline?

[Randahl Fink Isaksen]

I noticed that the current CSS implementation only supports regular fonts, italic fonts, and bold fonts.

Many modern fonts come in more variants – Open Sans, for instance, comes in variants 
Light, Regular, Italic, Light Italic, Bold, Extrabold, Semibold, Bold Italic, Extrabold Italic, and Semibold Italic. 

Have I overlooked something or am I right that it is impossible to style a JavaFX app using CSS and get one of these variants, say, Open Sans Semibold?

Randahl