The new HC is the current HC.
I doubt we see any changes in offense. We'll just continue to build it and acquire pieces that fit KK's system. I highly doubt we draft a QB with Rattler and Haener on the roster behind QB1 Carr.
Defense is where their could be changes. I'm curious what Joe Woods wants to run should he be retained as DC, but we'd be better off keeping Woods and let him put his stamp on the dwfense which he's already started doing.
The biggest changes we'll probably see will be the addition of more talent and moving on without Cam and probably DD.