Yup I saw the same news today, not only the EX90 but the Polestar 3 has been delayed too. Seems like it's a software issue.
europe.autonews.com
Demand for the car remains high, Volvo said. Doing further work on the vehicle’s software will help ensure a quality experience for all customers, the company said.
Production was previously planned to begin at the end of 2023, a Volvo spokesperson said. He declined to say when the company now expects the model to reach showrooms.

Volvo delays EX90 flagship electric SUV production start
Demand for the EX90 all-electric flagship is high, Volvo said. Doing further work on the vehicle’s software will help ensure a quality experience for all customers, the company said.

Demand for the car remains high, Volvo said. Doing further work on the vehicle’s software will help ensure a quality experience for all customers, the company said.
Production was previously planned to begin at the end of 2023, a Volvo spokesperson said. He declined to say when the company now expects the model to reach showrooms.