Welcome to the forum!
I am so sorry about losing Max. Reaching 15 is an incredible lifespan for a GSD, he must have been extremely well loved and cared for.
It sounds like you have your hands full now, though! A 6 week puppy and an 11 year old is quite the mix of energy levels!
Diesel is stunning, that dark and light coat pattern is beautiful. Queenie is also looking quite regal, pretty girl!
You definitely have to pay the puppy tax and post a photo of Thor when you can! We'd love to see the little guy!
Hope to see you around!