The next-gen MacBook Pro with Retina Display: SSD Analysis
Amazon.com: 256GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
MacBook Pro 13" and 15" Retina (2015) SSD
Surprise! iFixit says you can't do much to fix or upgrade the 2015 MacBook | Ars Technica
MacBook Pro with Retina display review (13-inch, 2015) | Engadget
MacBook Pro Early 2015 SSD Upgrade - YouTube
MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
MacBook Pro Retina: Upgrading to SSD (Howto)
How to install an SSD on a 15-inch Retina MacBook Pro
How to install an SSD on a 15-inch Retina MacBook Pro
SSD Upgrades for 2013, 2014, and 2015 MacBook Pro
SSUBX SSD For A1398 2015 MacBook Pro Retina
MacBook Pro 13 A1502 How to install M2 SSD upgrade - YouTube
15" 15 Inch Retina MacBook Pro A1398 Mid 2015 Complete Disassembly (Almost) SSD Upgrade - YouTube
MacBook Pro (Retina, 13-inch, Early 2015) Upgrade to NVMe M.2 SSD - YouTube
How to Upgrade the SSD in a 13-inch MacBook Pro w/ Retina display (Late 2013 - Early 2015) on Vimeo
How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac
How to Upgrade the SSD in a 15-inch MacBook Pro w/ Retina display (2012–2013) MacBookPro10,1 & 10,2 - YouTube
How-To: Upgrade the SSD in your MacBook Air or Retina MacBook Pro, boosting size & speed - 9to5Mac