I'm not sure that anyone thought the iPhone 6 was coming this year anyway? As far as I know, the general consensus has long pointed to 5s.
I was really starting to believe the rumors about 3 new iPhones this year.
This made the most sense to me. They can't afford to lose ground in the emerging markets. They need a more affordable and powerful phone to come out soon. They also need one with a 5 inch display for all of the larger handed people.