Why is Phil Rudd not touring with ACDC in 2024?

Could you please elaborate on the reasons behind Phil Rudd's absence from AC/DC's 2024 tour schedule? Is there a personal matter that he needs to attend to, or is there a professional conflict that has arisen? Additionally, have the band members or management made any official statements regarding this decision, and what are the implications for the band's future performances and lineup? It's intriguing to know the reasons behind such a significant change in the band's lineup.