Yep, Best Buy bought out Future Shop (Canadian owned until then) a few years back when they began making their move into Canada. I also thought that Best Buy would begin to phase out Future Shop about now, since they began to build Best Buy within a kilometer distance of Future Shops
I've even seen a couple Best Buys and Future Shops in the same area built at the same time. I guess they're trying to flood the market.
From the look of things, I'd say BestBuy is trying to drum up emails for their lists. There has been no official confirmation from Rogers, Telus, or Bell about the iPhone.
Personally, I'll stick to London Drugs and A&B Sound out here on the Left Coast. iPhone or no iPhone.