Does anyone know what significant differences, if any, have been made to them?

I can not remember the exact years.

It may be 2011 and up, uses a different pinion bearing/race for the 11.5”.

The front 9.25” is the same?

The reason for my question is I found a set of stock AAM 4.10s from a 2016 with 60k miles (front and rear) for a reasonable price and want to put them in my 08.