"....... Caretaker Jimmy Dack has been overseeing the first team affairs since Edinburgh shooted off, however it's understood that he is now set to leave Rodney Parade too....." http://www.thesackrace.com/news/27th-april-2015/terry-butcher-in-the-frame-for-newport-county-post
"As for his own future, Dack denies that he will be reunited with Edinburgh at Gillingham in the short term. “Everyone’s put two and two together and come up with five but that’s not the case,” he said of the Gills link. “Justin and I are good friends, there’s no doubt about it. “Sometimes circumstances are different but as things stand a lot of people will be speculating but I’ve not got a job to go to. “My wife’s not too happy about it because I’ve got to pay bills but that’s life. Sometimes you’ve got to make decisions in life and it might be costly but it might work out for me. “I’ve always been honest with everyone at this football club and, as it stands right now, I haven’t got another job.” - http://www.southwalesargus.co.uk/sport/football/newportcounty/12921030._/
I believe that the question is more about Hess than it is J Dack (Jack?). Hess said that the only thing that brought him back to the club was Taylor and whilst he has stuck to his contract, I believe that he fell out of love with the club (at least in a working role) after he was last sacked. If Jed has to have a replacement for assistant manager it makes sense to appoint t someone who both knows his systems and gets on with him. We shall see.