Spare Parts Point to Larger iPhone
iResQ also noted there is a reflective surface above the speaker, which they theorize is for the proximity sensor.
Some have wondered if anyone would recognize the size change in the device. We'd say, yeah!
1/4 inch? New cases, holsters, and despite the fact that case makers would get people buying new cases, they'd also have to redesign their stuff.
Anyway, this is still all just a rumor. Until Apple unveils the new iPhone, we won't really know, will we?