We have been dealing with Toyota for over 8 months and just were told a short block replacement is needed. 2024 Land Cruiser 

We have a documented thread here. Was told from FTS and Toyota corporate there was a redesign to the main bearing. We have seen extremely high aluminum in the oil over 4 oil changes and 10k miles. 

https://www.landcruiserforum.com/threads/hearing-a-rattle-noise-at-low-gear-acceleration.724/page-8