The next-gen MacBook Pro with Retina Display: SSD Analysis
How to install an SSD on a 15-inch Retina MacBook Pro
Amazon.com: Odyson - 128GB SSD Replacement for MacBook Pro 13" A1425 / 15" A1398 (Late 2012, Early 2013) : Electronics
Amazon.com: MCE Technologies 1TB Internal SSD Flash Upgrade for MacBook Pro Retina (Mid 2012 - Early 2013) - Includes USB 3.0 Enclosure for Original Drive & Install Kit! : Electronics
Upgrading the new MacBook Pro is still a major pain
Touch Bar MacBook Pro models have non-upgradeable SSDs, seemingly under-sized batteries - 9to5Mac
How to use an NVMe drive to upgrade your Mac's SSD | AppleInsider
512GB SSD Hard Drive for Apple MacBook Pro Air 11" 13" 15" A1502 A1398 A1465 A1466 (Late 2013-2015) / OSX Sierra/Mac Pro A1481 : Electronics
The next-gen MacBook Pro with Retina Display: SSD Analysis
How to install an SSD on a 15-inch Retina MacBook Pro