Louis Herthum (Peter Abernathy) has also been upgraded to a regular.
http://deadline.com/2017/03/westworl...52806/#respond
Really happy about this one too, his performances in season 1 were brilliant

I like that being decommissioned (and essentially lobotomized) doesn't necessarily mean the end of a Host's role in the story.
If none of Anthony Hopkins, Sidse Babett Knudson, Jimmi Simpson and Ben Barnes return to the main cast next season, we'd still have space in the opening credits for some more new names, although I'm not counting out any of them coming back as regulars just yet given the nature of the show.