I've now heard from two different sources that SFS principal trumpet Mark Inouye auditioned for Phil Smith's spot in the NYPO, and has been offered trial weeks. A web search found confirmation on a trumpet forum. (And I should ask the NYPO when his trial weeks are.)
It's possible he won't get an offer and it's possible he won't take it. I'm hoping he sticks around, for the obvious reason that he is an unbelievably great player.