Yesterday, the Arapahoe County judge in the Aurora theater shooting case formally accepted the defense's plea of Not Guilty By Reason of Insanity. That does not mean the shooter has been ruled to be insane--it merely means the judge is allowing him to plead insanity, which then puts into motion the official sanity evaluation process.
The shooter will be transported to the Colorado Mental Health Institute at Pueblo, where he will likely spend several months. A psychiatrist will evaluate him and offer a 'psycho-legal' opinion about the shooter's sanity. Then, it will be up to a jury to make a decision about whether he was insane at the time of the shooting.
Here is a 9 News story from yesterday where reporter Chris Vanderveen interviewed me about the sanity evaluation