From January 2018 onward, all the ErgoDox EZ Keyboards come with the CIY feature built-in without extra cost. See it in photos:
To make this happen, we modified our production tooling to support the changes required for the CIY feature. Below you can see the bottom case of the keyboard: CIY vs Soldered.
For those who love the details, below the PCB underside side by side.
And of course, we wouldn't be able to offer you a complete CIY experience without working on our tools. Keycap puller on one side, keyswitch puller on the other.