Zoom in and out using the + - icons and you will clearly see...

Zoom in and out using the +  - icons and you will clearly see what the numbers on the red spots symbolise.
Eg. a red spot with single digit represents number of properties for sale in the vicinity.
Zoom out and the individual properties are shown.
Blue dots represent number of days until the home open date.

The key message, and essential move for Home Open, in yesterday's announcement is the reference to ....Work will continue over the coming months with the aim to roll out Home Open throughout their entire network of franchises. (in ref to: Australia’s largest real estate franchises who have added selected offices to Home Open)