Probably. [not based on any spoiler knowledge, just my opinion]
I don’t want to be a spoiler, so DON’T read on and DON’T do it if you don’t want to know...
...but you can look up The Walking Dead on Internet Movie Database - www.IMDb.com - and check the biographies, professional credits, and appearances of the actors who play the new characters.
The plots of the coming episodes are NOT given, so that won’t be spoiled for you (assuming you’e read this far) but the episodes in which the actors appear ARE given, right through to the end of season five.
So (DON’T read any further!)
...it looks like that obnoxious new character who heads Terminus is slated to apprear throughout season five.
Thus, unless it’s all done in flashbacks (which is certainly possible), we’ll be seeing him again bringing trouble to our heroic ex-prison good guys - perhaps as this season’s “Governor” or villain character.