That's the point. As long as it sells well and doesn't tamper off(after the first issue) then he'll be able to keep writing it.
First issue seems to be going well. Although that Titans Academy kiss seems to be a point of contention that I can only assume DC is either going to do some 'fast retconning' to make whatever the case is more obvious.. or leave it open to debate if they want to dig into drama some more.
Either way, as long as Nightwing sells well, he'll be able to keep writing it.
Back in June it was 12th in Sales which is pretty good considering.