I got notice that my renewed passport should be coming around 2/3.
So:
12/30 - dropped application in mail, including self-taken passport photo
1/8 - email notice indicating the application was received.
1/11 - check cashed
1/27 - email notice that the application was approved, should get new passport book around 2/3, notes the normal application processing time is 10-12 weeks.
I didn't pay for express service.
I wasn't expecting the quick turnaround necessarily. My old passport was due to expire at end of August so I would have been fine getting it back say by early April or so.