1) If they offer the 3.5 in the Five-Hundred, then it will be available in the Freestyle- both vehicles are built on the same assembly line. There'd be no reason not to offer it in both.
2) I'm pretty sure that 2007 is the last year for the CURRENT Freestyle; there's a re-designed one in the works (new platform, different from the Five-Hundred), and it looks like it will be out in 2008. What it looks like or what it will offer, I have no idea.
3) Ideal vehicle for just about everyone: more interior room than an Explorer, AWD, luxurious. I love 'em!