It's been a big deal in multi-core server setups for years upon years. Once we start getting multi-core phones we'll start getting multi-threaded apps to take advantage of it. Expect it first in games since they're the most-demanding on the CPU and GPU anyway.
And sorry if I'm wrong on a few of the details, I've been taking threaded applications for granted for years on my PC, so I'm a little rusty on my research. Essentially that's accurate, if in spirit alone.
that doesn't mean that the 5th Gen iPhone's VZW is getting will have Ice Cream OS right? they'll still obviously run whatever apple firmware version is going at the time like normal? is there any possibility to ever get an iphone to run some sort of android software? just curious.