Pretty much what Frayace said. Be careful, you'll take more damage in the jungle than you used to, especially at the wolf camps (they no longer have a crit chance, but they now deal about 80% more damage than they used to). Smite's cooldown was lowered by 20 seconds, so you can smite the first buff. A tradeoff for this cooldown reduction, however, is damage: it no longer deals as much as it used to. Just be careful of that when trying to secure objectives like dragon and baron. My personal favorite rout right now is Blue > Wight > Red, since that gives you the most XP by clearing three camps. Another thing to note: both buffs will no longer get you to level 3; you HAVE to clear more than your buffs to hit level 3. If we haved a ranged top laner, like Vlad or Kennen, I donate my wight to them (since with their free trinket ward, they can take it themselves from over the wall) and I just do wraiths instead. If I'm on the purple side, I usually donate it to the adc, since they can get a significant portion of XP from it. Wights give about as much XP as the double golems.
For items: Wriggles is still horribly gold inefficient, not worth anything. Spirit of Spectral Wraith spell vamp only works on jungle monsters now. Bottom line, rush your jungle item, then start farming it up and ganking when lanes get out of whack. You can donate a lot of stuff to help lanes out, and still have enough jungle creeps to farm effectively.