Although many are still on backorder, you can purchase Kirk & Really Right Stuff plates and L-brackets for the 6D Mark II
and the items will be shipped as inventory replinishes.
Both Bryan and I are big fans of camera L-brackets. Being able to simply loosen an Arca-type clamp, rotate the camera and reclamp to change orientation is extremely convenient. [Sean]
I'm fairly confident that the picture showed for the in-stock Kirk Camera Plate for Canon 6D Mark II
is incorrect; the picture shows the L-bracket, but you only receive the bottom (base) portion of the two-piece L-bracket for that price.