The Sovereign is now slacker in the head angle and longer in the chainstays than originally, though it's still steep HA and short TT for what it is. I really don't understand the longer stem logic - yes it might make the steering feel slower but it doesn't add much stability and makes it harder to keep your weight centred over the BB on steeps. With the slack seat tube it'll be harder to get back behind the saddle with the saddle at uphill height - I'd have a dropper post or the saddle down much of the time. Slightly shortening and raising the spring rate on the fork makes sense - I think long fork hardtails feel much better balanced with the forks on the hard side and tyres on the soft side.
It does look good!