It's what we call a "power up" globe. Basically, there's a small chance that whenever a health globe drops it'll turn into a power up globe instead. These globes can provide the player with one of several small, temporary buffs (+MF/GF, +movement speed, +attack speed, etc) when picked up and last for very short period of time. They're similar to Shrine buffs, but are designed to give players a quick boost during the middle of combat, rather than something you take from fight to fight.
Right now, there aren't any plans to bring power up globes to the PC, but that of course may change as we continue testing and poring through your feedback. :)
Ideas such as endless dungeons, hold out missions, and more Monster Power levels are being discussed, but there are no official plans to release them as of yet.
Gold and other commodities will not be bound, only wearable items. When implementing policy changes like this that can affect the in-game economy as well as a player's experience, it's really important to us to take a measured approach.
That said, binding wearable items is a first step. We'll be monitoring how/if this policy change improves the issues we've had with false compromise reports in the Americas and Europe, and are totally open to making additional changes as needed (which may include adjusting how commodities are restored during rollbacks as well).
This is the first time we have seen the new dynamic camera and evade mechanics exclusive to the console versions in action. It has also been confirmed that there will be no real money auction house.
IGN posted a 10 minute video of them playing the game at PAX.
At around 7:14 in the above video a monster drops a globe on death. This globe when clicked gave an "Increases EXP gained greatly" for 10 seconds. There has been no official word from Blizzard on this feature yet.
Blizzard's next game is HearthStone: Heroes of Warcraft, a free-to-play online collectible card game.
You can play as one of nine World of Warcraft classes, collect cards, and battle people online. It boasts 300+ cards, with five cards coming in each pack you earn or purchase. Duplicate cards can be disenchanted and turned into the exact new card you want.
Platforms announced are PC, Mac and iPad. Will release later this year.
You can sign up for the beta at the official website - here.