Bella had her first grooming at 16 weeks. She went from black cotton puppy coat to silver silky coat in one fell swoop. Before and after grooming pictures are at near the bottom of the first page of this thread:
http://www.yorkietalk.com/forums/gen...-grooming.html
I expect that your dog could very well go through the same changes, but you're probably a month away from the start of the changes.