I'd be shocked if they did, though it might be a local thing. No Best Buy allowed pre-orders on the +'s I'm pretty sure, but the manager at mine told me personally that they weren't even getting any in their first shipment, so there wasn't a point.
I'm thinking about checking my local one but feels pointless if yours couldn't get one 6 + out of the 36 different models.None at my local Best Buy and no line. I bet many folks do not know they open at 8. Also probably lots of preorders for the 6 which helped as well.
I will have a 6 in my hands very soon.