The Pope's butler, 46 year old Paolo Gabriele was arrested in May. He wrote a letter to the Pope where he reportedly appoligzed for his involvement in the leak of documents.
If found guilty he could face up to 4 years in prison. Along with him, a computer programmer who worked at the Vatican's Secretariat of state, is facing a lesser charge of adding and abbeting, which could lead to a year in prison. He was not present at the trial hearing, but he was represented by his lawyer.
Once a sentenced is issued, the Pope could grant a 'Papal Pardon,' but it's unknown if he will do so or not.
From the Vatican. I'm KLH for RR