I believe Verizon is leaving an "out", where they have the option of not releasing, but like the 9th, this is the date they are shooting for. I also believe there is something - whether it be google wallet, waiting for 4.1 to be ready, or waiting on the stars to align - that Verizon is waiting to be certain they are launching. And I really think they do want to get this phone out, no later than the 15th, to maximize 4th quarter sales.
But to leave themselves the out, they are not announcing or advertising until they are absolutely certain they are releasing. Which may not happen until the 15th. So yes, this phone could possibly be released without an announcement until the 15th or any advertising until the 15th.
Or it could be delayed again, but I think they will do everything they can to release this Thursday.