Do we even need new hardware?
Well, the PS3 at least has a future secured until next year as far as I know. The 360 on the other hand is a console that really completed its life cycle, and I don't think there's much that Microsoft can offer outside of what they have been doing since 2011 or so with more Gears of War, Halo, Forza and timed-exclusive for big multiplatform titles like Call of Duty or Tomb Raider.
*shrug* I don't know man. A lot of the "360 people" seem way more excited for next gen than the ones from the PS4 crowd that are mainly interested in the console as a future purchase.
Is also worth mentioning that I started seeing rumors of new consoles back in 2009 so... do we need new hardware? Both consoles have shown their age for a few years now (one more than the other) and there is a group of people excited for a change (whatever that change might be or mean for some people).