[whpalmer4]

You need to be a bit more specific about "your lists" -- depending on the action selector (Status Filter), you will see Due (soon) items even if they are not yet available if the due date falls in the scope of the view.

I'm going to assume you are looking at your actions in Context mode. If you have a simple project with two sequential actions, Thing 1 and Thing 2, with Thing 2 having a due date later today and Thing 1 not having a due date assigned, here's what you'll see with different action selector values:

Any Status: everything
Remaining: everything except items already completed
Next Action: only the next available action (Thing 1)
Due Soon: any action with a due date in the due soon interval (Thing 2)
Available: any action which is available (Thing 1)
Completed: only items already completed