The International Brazilian Jiu-Jitsu Federation released the updated rule set for the 2013. While many things have stayed the same there are some new changes to the rules that include:
- To receive points for a takedown you must stabilize the position for 3 seconds
- Penalties will be noted on the scoreboard
- You will receive a severe penalty for intentionally trying to initiate an illegal position (ex. forcing a reap from your opponent to get them disqualified).
- Restricting the registration of athletes with previous martial arts experience.
Here is a video by Felipe Costa explaining the IBJJF Rules: