Board Thread:Spoilers!/@comment-3010035-20150701044944/@comment-26443838-20150721121817

Edzz wrote: http://tvline.com/2015/07/20/westworld-ben-barnes-replacing-eion-bailey/ Here it says that Eion Bailey (who plays August) was unable to join a new show due to previous commitments and filiming clashes.

I checked his wikipedia page, and it really doesn't look like he's been in anything significant except Once Upon a Time in the past few years, so I think there's a high possibility of him returning for Season Five! I checked on Wikipedia as well for Meghan Ory who played Ruby. There doesn't seem to be anymore films or shows on the list for her. So there is a high possibility for her to return for season five as well.