It seems that the only way to access integrated sat nav with the new Australia-bound Honda Odyssey is via the HondaLink iPhone app; this app requires an iPhone 5 or newer. A free 3-year subscription is included with the car.
Waiting to hear back about Android availability, and pricing after the three years are up.
Not sure how I feel about this.
Pluses: app and maps can be refreshed without visiting your dealer.
Minuses: only for iPhone users; subscription fees; a new trend towards outsourcing of nav functions?