Blizzard have launched the new upgraded bettle.net which have a new design and some new features.
The bettle.net offers a new way for players to manage their Blizzard Entertainment games,make online Blizzard store purchases, log in to World of Warcraft, and more using just one set of login information.Players now can upgrade their WoW account to a Battle.net account, and Blizzard will also merge any Blizzard accounts that customers have in the past posted.

Here are some benefits of the Battle.net account include:

Fewer passwords to remember. One single login lets you access World of Warcraft,the online Blizzard store, and more -- including upcoming games such as StarCraft II and Diablo III.

Opt in to upcoming Blizzard Entertainment beta tests. Put yourself in the running to be invited to test upcoming games. 

Easy access to your classic games. Store your CD keys for classic Blizzard Entertainment titles, and then download the games whenever you wish.

And more to come.Blizzard  plan to add more features in the future, including tools to help friends communicate between games and bring players closer together.

Merge your World of Warcraft Account now