So I just came up on something that might help anybody who's impatient, can possibly cancel their order through Sprint and are willing to get the phone from Apple directly.
Follow this link to reserve a 7 or 7 Plus in the Apple store now:
https://reserve.cdn-apple.com/US/en_US/reserve/iPhone/availability?channel=1&iPP=U
I cross referenced with istocknow and it seems to be accurate. Not everywhere has stock of course but quite a few locations still do. The 7 is widely available of course...it's the Plus that's a bit harder to find...it's out there though.
Wish I knew this earlier before my store's stock depleted...I could possibly have the phone I want now. Hope this helps someone though.
Edit: This seems to be for the iPhone Upgrade Program only.