I would guess at the very end of August, but more likely the beginning of September that the phases 1B dealerships will start getting cars. Now most dealers may be only getting a demonstrator not maintain inventory.
Take for an example the 2013 Mustang Shelby GT500 this is a $60,000 car, you will not find a dealership with more than 6 of these cars on the lot. More like 1 or 2 GT500 on the lot. This car has a limited customer base, like the FFE.
Side note: The 2013 Mustang Shelby GT500 has had the 150 MPH speed limiter removed. Top speed of the car is 200 MPH. This is the fastest production Mustang ever produced by Ford!