Couple quick comments:
Hmm... only 4 1/2 pages, I thought it was going to be longer.
Sneak attack is once per turn, instead of once per round. Was that already previewed somewhere? Rogues are really going to want melee training and granted attacks from a leader.
Rapier is a military weapon now, so it is easier to get access to for many classes. Nice, because it wasn't always worth the feat, but is a flavorful option.
Weapon Focus no longer gives you a bonus to attacks made with a staff as an implement. This affects my invoker and I'm PISSED!!! Just kidding. It seems reasonable to me.