Slate is a nodequeue add-on created to manage daily queues of nodes with fine-grained control over elements of both chronological placement and absolute positioning.
For instance, imagine you have a busy site homepage and want to schedule out a day of stories. With Slate you can map out the day by adding Story A at 08:00, Story B at 09:00, and Story C at 10:00. Additionally, perhaps you want Story A to be the top story for most of day after it is published. You would insert it at 08:00 and Position 1. Thus, at 10:00 you would see the following node order:
Story A
Story C
Story B
Then, at 13:00 you want New Story to be the top story, so, you would insert it at 13:00 Position 1. This displaces Story A in the top slot, and forces it back into chronological rotation. At 13:00 you would see:
New Story
Story C
Story B
Story A
You can perform the following with an arbitrary number of positions, enabling you to, say, keep a node in position 3 all day long, even well positions 1 & 2 are always the latest.
Slate allows you to create an arbitrary number of queues and subqueues are generated on a daily basis (options to schedule on other intervals might be forthcoming if there is demand).
Slate provides a node edit form group for creating insertions, and several admin features on Slate owned nodequeues.