Samsung is reportedly going to be releasing their tizen OS soon this year...
But I don't the fact that a quad core smartphone is going to do anything better. A five inch screen is by far too big for one hand use, unless if it's made tall and skinny. I have pretty big hands, but a 4.5 inch screen is the cap for me for using a phone one handed.
There really isn't a point for that 7 inch phablets anymore at that point then, two inches of screen more, big deal. My main point is that there just simply isn't a need whatsoever for that CPU power, AT ALL. You're not running Photoshop on it, why would you? It's absurd to do so. You wouldn't want to use that over a PC, AT ALL. The screen simply isn't large enough, the form factor isn't designed for that.
Seems like a gimmicky marketing feature than anything.