What are the implications for property buyers with the new restrictions on the re-issuing of options to purchase by developers?

It does remove your ability to "chope" a unit, with the promise that you'll be given more time if you can't cough up the rest of the money by the usual deadline (usually 21 days).

This can also hinder those who want to book their preferred unit first, but need more time to, say, sell off their previous property for the proceeds.