You simply can’t say “kingdom” in the 1st Century and not think of a King, and a Land, and a citizenship and a Law that governs the citizens. You can’t get by with thinking it is nothing more than the personal experience of God as my king.
In short, a place with certain characteristics. Contrast this with the average assumption in many post-modern readings, which generally concerns itself with Kingdom as an experience, a warm-fuzzy thing that happens to you inside. Interesting.
He also highlights "communities shaped by the Lord's prayer" as a theme for the book. Scot is one of the more Jesus-y thinkers on the web these days, and it seems like with this book he's trying to push discipleship towards Jesus-shaped communities. Sounds like a plan.