MWeston made a post regarding the keyboard layout that seems to imply that sticky keys will not be available:
This layout as it is shown in the picture is impossible because you can”t press 3 keys at once unless it is game button/keypad combos. I have already let ED know that so I”m sure he”s still working away at it.
UPDATE: Nevermind
From MWeston:
I think sticky keys should definitely be used. That will be great for keys that are used less and were less optimally placed for that reason.