ITEMS:
http://www.smogon.com/forums/showthread.php?t=21848
Go here first for most of the item information. Most of the new items are in the first post. If you are looking for changes to old items, hit Ctrl+F and search for ***.
BrightPowder: How much does it increase evasion?
Grip Claw: Partial trapping moves have 3 extra turns.
Focus Band: What is the chance to activate?
King's Rock: What moves aren't given a chance to flinch? Is it all moves that can already flinch or all moves with a secondary effect (or something else?)
Lax Incense: How much does it increase evasion?
Micle Berry: What does it do?
Power Ankle / Band / Belt / Lens / Waist / Wrist: In addition to the EVs normally gained from defeating an opponent, the holder will also gain 4 EVs in the stat the Power Item corresponds to (Waist: HP, Wrist: Attack, Belt: Defense, Lens: Special Attack, Band: Special Defense, Ankle: Speed). The holder's speed is also reduced 50%.
Razor Fang: What is the flinch chance?
Shell Bell: What doesn't activate it? I know Doom Desire, Future Sight, and any other end-of-turn damage does not, but other than that...
Shoal Salt: Contrary to what Serebii says about it, Shoal Salt does NOT recover any HP in battle. It still does absolutely nothing.