I think they will continue on their present path - which is continue to rise.
IR rises do 'spook' the market. This lasts all of about 2 weeks before people realise that the sky did not cave in after all. Then they get back to business as usual.
When banks assess a borrower's capacity to service a loan, they do so with a rate of 2% higher than the current variable rate (the "assessment rate"). Therefore, FHBs and others who have taken out loans when home loan IR was 5% should be able to tolerate IRs of 7%. That is
years away into the future at the moment, (that is, getting to 7%).
For those of us that already had loans past 2 years ago - we were already paying 7, 8 & 9% back then. If our loans are still the same value now, we know we can already handle an increase of 2 - 3 % as we've been there, done that.
The underlying fundamentals have not changed. Immigration is still high. We still are not building enough houses. Rents will increase. Demand is still exceeding supply. etc etc
If you want to look for an excuse as to why not to buy now or to hold off buying now, you can always find one. Here's a couple I've heard:
1. Wait until the FHOB expires - less competition from FHBs. Yes, but more competition from other investors

2. Wait till interest rates drop further. Well they just went up by 0.25% yesterday

3. Wait for prices to fall 40%. Well they went up by around 10% in the last 9 months

4. Wait to see if I still have a job. Well unemployment did not get anywhere near what was predicted. etc etc
At the risk of being labelled a 'property bull', 2 years ago we were all paying a minimum 2% more in IRs than we are paying today....and it looked like we were heading towards 10% IRs by 2011. Some people started locking in fixed rates of 8.5% & 9% because, amongst other things,
they could afford it. Nothing has really changed as far as I can see.
So what have we all been doing with the extra cash we've had? Some will have saved, some will have paid down debt - both good and bad, some will have purchased consumer goods like TVs & cars etc. These last things are the items that will suffer with an IR increase IMO. If people have less disposable income then the discretionary spending gets hit - not housing. Australians (and their politicians) love housing. We'll do anything to 'save the house', take a second job, whatever.
When some households were in mortgage stress they took the decision to sell. Most of these 'mortgage stress' sales have happened now. I think if you wait to , you'll be waiting a very long time
Meanwhile, there are risk minimisation strategies that can be engaged in. My personal favourite is buying in metro & large regional areas - but properties with 7-8% yield.