Ahead of the release of the M1 Macs, Apple provided developers with a Developer Transition Kit that included a Mac mini equipped with an A12Z Bionic chip first used in the iPad Pro, 16GB RAM, a 512GB SSD, two USB-C ports, two USB-A ports, and an HDMI 2.0 port.
These DTKs were offered up on a temporary basis to developers who paid $500 for access, and were aimed at giving developers a way to create Universal apps to prepare for the transition from Intel processors to Apple silicon chips.
Apple is now asking developers to return their Developer Transition Kits in exchange for a one-time use code that will provide a $200 discount on an M1 Mac.
Read more at MacRumors.com