Yes Woman's Boxing will have 3 different weight classes for the 9 metals that will be awarded and the men will have 10 weight classes and 30 metals

There are a minimum of six governing bodies in pro and amateur boxing. They all have varying weight classes and are too numerous to mention. See the attached link,

http://www.answers.com/topic/boxing-weight-classes

Women's Boxing will be 3 new events for the different weight classes

It depends on the weight class, different weight classes have different size people so the reaches vary from weight class to weight class.

There is no official weight to become a boxer. There are many different weight classes in boxing for example featherweight, lightweight, middleweight, heavyweight and many more. This again allows for different championships to be competed for at all the different weight classes.