The new Florida law does nothing more than say that if you are the victim of an unprovoked attack, you do not have a duty to run away from the attacker.
The key word is "unprovoked". You're not allowed to bait someone at a bar into a rage, and then pull a gun as your trump card.
This brings Florida law back into line with the laws of most other states. When the Brady bunch says "no other state has ever passed a law like this one", what they really mean is that Florida is the first state that had a New York City style "you're not allowed to defend yourself" law and subsequently repealed it.
Then again, truth has never been a strong point for the anti-gunners.
-- Mark --