Pub day means you can now buy the book in stores. As opposed to the Australian meaning of pub, a place where you go to drink beer. Though as it happens, the Egyptians in The Singer From Memphis are totally into their beer. Nico can't get a decent cup of wine anywhere. But he still has to solve murders and uncover hidden treasures in the trackless wastes of the desert.
Pub day is a weird thing for an author. We don't fly from store to store selling the books personally. We didn't print the books ourselves; we didn't ship them to their shelves. All those highly important things are done by other wonderful people.
So what does an author do on pub day? Well, he writes the next book.
Death On Delos is finished in first draft. I've even written the author note that so many people like to read. It will be Book 7 of the Athenian Mysteries. The Singer From Memphis is Book Six ... and that's really quite remarkable.
I hope you enjoy reading Nico & Diotima's adventures as much as I like writing them.