Yes, the A330 is currently still using the regional business class. I flew on it on the Singapore-Canberra- Wellington route. It is not a lie-flat bed, there is still an 8 deg or so incline, but frankly I found it ok.
Here is the review of the flight back - Wellington to Canberra, and then Canberra to Singapore.
Wellington to Canberra - SQ 292
Canberra to Singapore - SQ 292