Jet Connect I believe is the NZ Company name for Qantas's NZ Domestic Operation.
To confirm their permanancy in NZ, they are getting a NZ AOC which can only be issued to a NZ registered Comapny, hence "Jet Connect" trading as "Qantas". They are expanding the fleet and also hence, recruiting. They have also been asking for Ops people and Call centre staff I think.
So in answer to your Q's
Routes for the B737 are the main trunk AA-WN-CH. DN may be part of the expansion. Origin Pacific to provide regional feeder service
Fleet size - I'm only guessing with this one but I think they have 3/4 a/c here now and looking to bring that up to 7/8???
Start of Ops - Start whistle has already blown
S2K