Women's Boxing is one of the newest events and there are no new sports in the 2012 London Olympics
BMX was one of them.
There will be 300 events in 26 sports at the 2012 Olympics.
Don't know about new sports but some old sport will be removed, such as baseball.
No new sports will be introduced into the London Olympics in 2012. In the 2016 games in Rio de Janeiro, the IOC will include the sports of golf and rugby sevens.
There are not any new sports, but Women s Boxing was added for 3 events to the Boxing sport already present for the Men
25 Sports Handball was the only sport for which the United States had no representation at the 2012 Summer Olympics.