2.4 Days of Battery on 10% !!!!!!!!!!!!!!!!

So the new Samsung S5 is going to give some super battery saving abilities, apparently. "Get 2.4 days of battery life on just 10%" when the screen is on black and white only, and only the vital functions of operations on. I love this idea! But not getting the S5 anytime soon...

Those of you who understand the mechanics of this feature, is it possible that we can see a similar performing app/tweak in the near future for rest of the android phones? I'd buy that app in a heartbeat!