IR35 is not changing in 2023.
The government had announced plans to repeal off-payroll rules in April 2023, which would have moved responsibility for determining if a contract sits inside or outside IR35. These plans were rolled back shortly after their initial announcement in the September 2022 mini-budget.
There will now be no changes to IR35 rules, and contractors will continue to be bound by the off-payroll rules introduced to the private sector in 2021.