In a similar vein, with 1.9 conditional activities will it be possible to put a date condition on a resource or activity? For example release a resource on a certain date and set it to expire on a specified date (for example a coursework assignment available until the deadline).
A lecturer would have the ability to prepare the material in advance and publish the resource, so the lecturer could see it in a dimmed state but it's hidden to the student until the date of release.