I went into my local Apple store the week after launch and talked to one of the Geniuses. He said he couldn't remember them getting any Pluses at all, other than the ones they had on display.
Thats just like here is south jersey. No pluses what so ever. But if i cross over to philly i can get a black 16gb plus with no problem. There is this one particular apple store that gets them in everyday but they sell out within minutes, i havent grabbed one because im waiting for a 64gb to pop up. (No happeneing)