Just completed replacing the keyboard on the 15" Retina MBP (A1398, late 2012, early 2013). I found this article to be quite helpful. A few extra notes I thought I'd add; 1. I found the keyboard and screws on eBay, the screws are the standard PH #000 screws that are used in the unibody MBP. You'll need 101 new screws for the 15" Retina MBP after all the rivets are removed. 2. Don't try to take the battery out, it can stay where it is, it's glued in and it isn't at all fun to remove. 3. There are two black PH #000 screws at the bottom of the keyboard, one on each side of the ribbon cable (under the battery connections). You'll have to remove them before you take the keyboard out. Those 2 plus the new 101 screws, make for a total of 103 screws. 4. Make sure you completely remove the display, when you take out the keyboard and all the rivets come flying out, it's very easy to get parts of the rivets/metal shavings on the display (when the display is closed it's right under the keyboard). Wouldn't want any...