From January 2018 onward, all of our 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.