"As we head into our fourth year of hosting, we'll continue to push for the delivery of a world-leading experience for not only the players on the pitch, but also for the exceptional fans who have played a huge role in putting this tournament on the map, and making the Canada Sevens weekend an experience that simply can't be missed".
New Zealand's beaten US 21-5 in the final, after earlier edging England 7-5 in the semis.
New Zealand and England went unbeaten in winning the other two groups.
However, the United States of America scored two quick tries before Australia hit back under the posts but it was a try in referee time that broke Australia's hearts, finishing the scores at 17-22.
Watch highlights from the HSBC World Rugby Sevens tournament in Dubai, including the Canadian women's silver medal win. Team USA finished sixth past year. The Blitzboks went through the gears early in the second and looked like the side that had won the last two titles in Dubai, Du Plessis grabbing a second with Werner Kok, Selvyn Davids and Rosko Specman getting their name on the scoreboard, the latter delighted the crowd with his electric footwork.
Greenshields collected her three in Canada's 38-7 opening win over Fiji. The Scots claimed a consolation try after the hooter sounded as Harvey Elms reached out to score but New Zealand were too good and advanced to the semi-finals.
Kenya started their campaign on a losing note, going down to Scotland and France 34-14 and 21-17 respectively. That will be followed by the Japan Sevens from April 20-21 in Kitakyushu, Canada Sevens from May 11-12 at Westhills Stadium and Paris Sevens from June 7-9.
New Zealand have won the first two of six legs in the Women's World Sevens Series after their Dubai triumph and sit top of the standings with a maximum 40 points.
A third of the way through the qualifying process, the Langford-based Canadian women's rugby sevens team appears well positioned for the 2020 Tokyo Olympics.
Semifinal: New Zealand 7 (Tone Ng Shiu try; Andrew Knewstubb con) England 5 (Tom Bowen try). It took five minutes before Ngarohi McGarvey-Black's massive fend and pace broke the deadlock.