In February Cherry Asia released pictures of their Cherry MX Board 5.0 mechanical gaming keyboards specifically designed for kt Rolster on their Facebook page: https://goo.gl/WezK1h
Now at Worlds 2018 some Go "Score" Dong-bin 고동빈 was spotted actually using this design in the team's impressive group campaign.
It's unclear where this design can be purchased, as Cherry Asia is not actively marketing the product.