It is still 100% legal to import nicotine into Australia.
Any potential changes in the law need to be discussed in parliament and voted on before becoming law. These things don't happen overnight and if and when any changes do happen we will notify you right away.
In the meantime, just in case changes in the law do go ahead and you can't get any nicotine in future, you can stock up on nicotine. And if you keep your Unflavoured Nicotine chilled, it will have a shelf life of approximately 2 years.