Rounds will be held at Waimate, Poverty Bay, Hawke's Bay, Central Hawke's Bay, Lumsden, Balclutha, Gore and Masterton.
The two blades shearers will be the top two in an eight-show series with events at the Waimate Shears, Rangiora, Ashburton, Christchurch, Reefton, Mayfield, Oxford and MacKenzie Shows.
The World Championships will be held on June 22-25 next year during the Royal Highland Show at Ingliston, Edinburgh.
Listen to Rowena Duncum interview Shearing Sports New Zealand chair Sir David Fagan about the upcoming season on The Country below:
This will be the 19th World Championships, the first having been for machine-shearing only in England in 1977.
A feature of this year's championships will be New Zealand's attempt to regain supremacy in the machine shearing and the defence of its new No 1 acclaim in the blades events.
New Zealand has won the machine shearing individual and teams events double 10 times but missed out on both titles at the last championships three years ago in France.
However, here New Zealand won the blades shearing double for the first time, with new international and Geraldine shearer Allan Oldfield's breaking of an African stranglehold on the individual title.
While Sheree Alabaster, of Taihape, and Pagan Rimene, of Alexandra, won the woolhandling teams event in 2019, it was the third time in a row that New Zealand had not won the individual title at a World Championships abroad since Alabaster won in Norway in 2008.
Some big competition is expected in Scotland, especially in the machine shearing, with UK nations' teams chosen during the current Northern Hemisphere season, including defending individual champion Richard Jones, for Wales.
New Zealand gun and world nine-hours ewes shearing record-holder Matt Smith is also in the England team.
The now-established and award-winning Cornwall farmer won the England championship final in June and will be out to emulate brother and Hawke's Bay shearer Rowland Smith's winning of the title, in Ireland in 2014.
But 2012 individual champion, two-time teams champion and New Zealand-based Scottish shearer Gavin Mutch recently missed selection, for what would otherwise have been his eighth championship representing Scotland in a row, dating back to 2005.
Mutch won major titles in the Royal Highland Open and the Scottish Blackface Championships in June, but was just third in Scotland's team selection event in the Scottish National Championship.
He did not enter the Scottish National Circuit which decided the second machine shearing position.