Point is - we just don't know. There's any number of things Apple could do in a month's time, we'll just have to wait to find out.
No point getting all angry at something before you know the facts.
What I do know is that the iPhone won't be getting a reduction in battery life, that's for sure. Going off history it will likely be slightly longer than the previous incarnation.
Slightly longer=not enough.
I don't think Jonathan Ive really uses his phone much. That's why he's so blinkered when it comes to battery life.