The new battery technology is already discovered, it's just a matter of throwing money at it to make it market ready.
And exactly what is this magical "discovery" that will work? The razr maxx has a great battery, but that is under patent, and guess who owns motorola? Google. You don't think these companies aren't investing billions into the technology? That is the next major improvment they are working on. You can't bring any more drastic improvements to smartphones without drastically improving the battery. And they will become stagnant without the improvments. These companies know that, and they are working on it. I would bet within 3 years there will be signficant improvements in battery life. Night and day.