There are new and interesting updates as far as this is concerned the reform of legitimate defense. The official approval of the standard dates back to not many days ago, although subsequent developments relating to any law have not been explored. The 3st May last, therefore less than a week ago, the text was published in Official Gazette and therefore all that remains is to wait for the next few days for the effective entry into force.
The Constitution provides fifteen days from this publication and therefore the "calculation" is not complicated: the official date is that of next May 18th. The provisions of the reform already apply to events that have already occurred and which just in two weeks are not the subject of a definitive sentence. The news cases that have occurred in recent times have a very close link with the law, consequently you will have to understand how to manage these situations that are always discussed a lot.