In the women's category, Swiss superstar Caroline Steffen will jump straight back into racing after finishing 10th at last month's Ironman World Championship in Hawaii.
"I love the races late in the season, especially the Ironman 70.3 distance," she said.
"Mandurah is such a great spot to race and a spectacular course too. It's a unique swim in the canal and the run course is just super-fast."
Bozzone will be joined at the start by Australian Luke Bell, who ended up in the medical centre at the end of the bike leg in Hawaii.
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They will be challenged by internationals including 2014 Ironman WA champion Denis Chevrot (France), German Per Bitnerand Seychelles pro Nick Baldwin.
Steffen will face a stiff challenge from Bitner's partner Yvonne Van Vlerken. They staged a memorable battle at the Ironman Asia-Pacific Championship in March, which resulted in Van Vlerken overtaking Steffen in the finish chute.