Larkin challenges Rockhold this Nov.
MMAWeekly.com reported the match up on Tuesday.
The match up comes as at least somewhat of a surprise, as all indications pointed to a rematch between Rockhold and former champion Ronaldo "Jacare" Souza. Souza finished Derek Brunson in the opening minute of the opening round of their "Strikeforce: Rousey vs. Kaufman" fight.
However, Larkin will fight for the title instead of the Brazilian after earning a unanimous decision over Robbie Lawler in July.
Meanwhile, Rockhold has defended his belt twice since earning the strap with a decision win over Souza. His first defense came against Keith Jardine, while his second title defense came against two-time top contender Tim Kennedy.
"Strikeforce: Cormier vs. Mir" takes place on November 3 at the Chesapeake Energy Arena in Oklahoma City.
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