Teenage Mutant Ninja Turtles Expands Last Ronin With One-Shot Training Day Releasing July 9

The new chapter signals continued investment in the darker Ronin timeline during a broader pivot to family-focused screen projects.

Overview

IDW set The Last Ronin — Training Day for July 9, 2026, a standalone prequel with pre-orders now open.
The story fits between issues #3 and #4 and follows Michelangelo as he trains Casey Marie Jones over a single day.
Paramount canceled a planned R-rated Last Ronin film and scheduled a family-friendly CG/live-action reboot for November 2028, as co-creator Kevin Eastman says the R-rated idea may be only shelved for now.
A novel adaptation of The Last Ronin arrives in June, extending the hit storyline beyond comics.
Paramount’s wider slate includes a Mutant Mayhem sequel in August 2027 and TMNT-themed pizzerias opening later in 2026, with reports pointing to an unconfirmed AAA Last Ronin video game.