does anyone know when the next monopoly sudoku level will start, and will it be the airplane level?

We have no idea when the next city in Monopoly Sudoku is going to be released. 
 
There will be an announcement in the bi-weekly blog in advance of a new city being released. 

You will need $1,000,000,000 (1 billion) to get an airplane ticket. No extra charge for checked luggage or airline meal. ✈ Don’t let your renters off cheap. Collect rent often. 💰

You’ll need 256 stars for the next airport.