Marking an entire Forum "read"

Previously there used to be an option to mark an entire forum as "read" which would unbold all the threads within it. Is that possible now or is it planned?

It's fierce handy if say you open up the "Motors" forum and nothing there in the thread titles tickles your fancy. You can mark it all as "read". And the next time you come back only threads that have been updated are "bold" in the list.