PVP.Net stuff: Eh, nice. Always good to see improved client functionality.
Updated splash art: Katarina is included, which makes me anxious to see how it looks. <3 Kat.

Jarvan: If Trundle, Garen and Xin Zhao had a love child..this would be it.
Anivia: I kinda felt something like this was coming - the initial change was definitely way too much.
Caitlyn: This was greatly needed. Perhaps now the bullets should be more difficult to block and people won't be able to cancel it as easily during casting time.
Ezreal: Trueshot Barrage is going to hit like a monster truck if no minions are in the way to lower the damage. Inb4 AD and Hybrid Ez are OP. 1.0 seems like way too much.
Mordekaiser: Hopefully this will help people realize that "tank" Mordekaiser sucks and that it's much more viable to build things like Gunblades and stuff on him.

Oh, who am I kidding. The majority of people will still rush FoN and Warmogs.

Urgot: I JUST learned how to exploit that, too. I think Kaj watched me use it to murder a stealthed Eve once.

Morello's Evil Tome: Basically an indirect buff to my Lux playstyle (Rushing this item seems ideal: It's cheap and Lux makes excellent use of all three stats).
Tiamat: I can see it being more viable on champions who have low cooldown skills that proc on-hit effects and scale with AD. Ezreal, Trundle, Gangplank, AD Irelia, maybe Nasus or Renekton or Twitch.
Wards: pineapplein' finally. I hate not having enough slots to buy the wards I need. =\

Ghost: I think this has been needed for a long time. Often times I would think to myself, "Ghost buff is STILL active?"

Minions: It feels like too much. I think they're going to end up nerfing them a little bit in the next patch.