As for the number of homesites..speaking as one who lives on the Jandakot Water Mound, as is the Airport, and living with all the accompanying environmental restrictions, it seems likely to me that it would be zoned "special rural" ie one house every two hectares.
When I called the Airport Managment office after listening to the news at 11 am, I was told "JF will be drafting up something for the tenants later"
The "notice to tenants" was eventually sent out at 2.34 pm.