I have attached a timeline of Augustan Rome, derived from that in the second edition of The Age of Augustus (Malder, MA : Blackwell, 2007) by Werner Eck. It will form the basis of updated versions; one thing that I would love to do would be to create adventures slottable into the timeline, and ones more "free-floating" as it were, able to be used regardless of the external events. For example, there's a conspiracy in Rome shortly after the recommended campaign start. That would be a great opportunity for an adventure of intrigue, no?
I also want to add, over time, more external events in addition to those directly affecting Augustus.
Thank you for your time and patience.