A Samsung presentation slide had a new 16 MP ISOCELL sensor listed that we didn't previously know about. When it announced the ISOCELL tech with superior low-light abilities, Samsung only mentioned an 8 MP unit is in the works, but the influx of 13 MP and even 20 MP or 40 MP phones, has apparently upped the resolution ante for it...
Source: http://www.phonearena.com/news/Samsung-confirms-a-16-MP-ISOCELL-camera-sensor-is-on-tap-for-future-flagships_id49134
Source: http://www.phonearena.com/news/Samsung-confirms-a-16-MP-ISOCELL-camera-sensor-is-on-tap-for-future-flagships_id49134