WWDC 2011 will release in June, whether iPhone 5 will release on WWDC is still a puzzle. But there is rumour that iPhone 5 will deploy 8MP camera.
WWDC 2011 Apple: iPhone 5 Will Release With 8MP Camera
Apple's camera sensors
are come from OmniVision before, but this time it is very likely that SONY provides camera sensors for Apple. This statement is confirmed by SONY CEO Howard Stringer.
It is reported, SONY produces the 8 megabytes pixel sensor
now, it is applicable to like Xperia Neo, and SONY CMOS sensor adapt to the dark and light line and with little noise. While Apple often say they need to all-round quality of a sensor, SONY's production is likely to conform to their new product requirement.