At this point in time? No.
Every indication points to an iPhone 5S. And even if it does have a cool new feature like finger print sensor or whatever, it just simply won't make up for what it's lacking.
But more importantly than hardware is software.
iOS 7 is, for the most part, a good direction for dedicated iOS users, but for Android users, it's unquestionably a step back.
I just can't imagine myself returning to such a closed system, confined to those icon designs, confined to what's essentially an app drawer, reduced to the lack of dedicated back/menu buttons, forced to use iTunes, the inability to have a true computer-like email experience, the inability to share to whatever I want from wherever and whatever app I'm in, to type or swipe the way I want to, to have immediate access to information via widgets, to toggle anything and everything I want (Control Center is nice, but can I set something to turn off my lock screen when I don't need the security at home so I'm not punching in my pin every single time I turn on my device?), and I most certainly can't go back to dealing with banner drop downs blocking and/or interrupting my already limited screen space (and sometimes blocking the navigation panels).
So even if Apple surprises us with a larger screen iPhone come this October, even if they add a notification light, even if they finally get rid of the antiquated physical home button, it'd be hard to return to the iPhone because of iOS.
Maybe 2014... maybe iOS 8.