To be honest? No.
We just started two new 3.5 games (one I play, one I DM) and so far the opinions on Pathfinder seems to be "meh." For me, I'm not sure I like how they changed the classes. It seems many classes (cleric, wizard) got pointless upgrades in power in exchange for spells being weaker and weaker, while other resource classes (barbarian, bard) got round-to-round resource management that seems a pain to manage. Overall, I'd have preferred they fix 3.5 by making it simpler, not more complex.
We're happy with our 3.5 houserules (after deciding 4e is not for us) so far. However, I will look at the final PDF (both the Core Rules and Tome of Secrets) to make my final decision.
But from the previews, it looks like they broke more than they fixed...