User blog comment:The Bonehead Skipper/Stronger Straw Hats and New Powers/@comment-81.129.40.243-20101013165834

I doupt zoro will have haki abilities. He will probably just be able to use his swords faster and cut through pacifistas and kairoseki.

Luffy is gonna be the only one to use true haki powers. The others may have gained resistance or slight use, but nothing really powerful.