A new addition to OK self-defense law

was signed by the Governor today. I'm lousy at keeping up with things, had to dig up the wording:
BE IT ENACTED BY THE PEOPLE OF THE STATE OF OKLAHOMA:
SECTION 1. NEW LAW A new section of law not to be codified in the Oklahoma Statutes reads as follows:
This act shall be known and may be cited as the “Oklahoma Self-Defense Act of 2011”.
SECTION 2. NEW LAW A new section of law to be codified in the Oklahoma Statutes as Section <734> of Title <21>, unless there is created a duplication in numbering, reads as follows:
There shall be a presumption that a homicide occurred in self-defense or in defense of others if:
1. The deceased was engaged in or attempting to engage in an armed robbery;
2. The homicide was in close temporal proximity to the armed robbery; and
3. The homicide occurred on the property where the armed robbery had taken place.
This presumption is rebuttable by clear and convincing evidence that the homicide was not in self-defense or in the defense of others.
SECTION 3. This act shall become effective .