Happy to report I picked up mine last night:
Current rMBP Model: 2012 2.7GHz/16GB/512GB
Date of appointment: Sunday July 23 2:45PM
Took credit card info: Sunday July 23 5:00PM
Credit Card Charged (replacement shipped): Tuesday July 25
Replacement picked up (or rejected): Thursday July 27th
Replacement Model: 2016 tb MBP 2.7GHz/16GB/512
Apple online repair status: No info available
I'm in the US
I have to say I've never had customer service like this and I'm really grateful to Apple. I was even on the fence about buying a new iPad and this experience just made me buy it. After waiting for months to bring my laptop in for repair I pretty much stumbled into this replacement program. Although it is bitter sweet because I really really liked my 2012 machine, never had any issues with it besides the battery (which has been bad for many months). Lots of differences with the 2016; new cables, no more magsafe, new keyboard (meh), etc. but overall I really cannot complain for what I got for $200!