More Space + seats (45 inc. Works Deluxe compared to 39) , and tighter pitch in the back. It's 48 Space + in the A321neo. Looks like NZ has realised it has more status holding passengers, but that the rest simply don't care enough to fly elsewhere (which is probably true). For me, if I can't get Space + on an A320 I wont fly it.
So now QF and VA have more legroom for those without status, although I expect NZ will still sell the 76cm pitch seats in front of the exit rows.