He will surely be indicted and sentenced with an option to pay a huge fine.
I believe so too, there is also pressure on France, as a lot of people are monitoring this case closely and accusing France of being against freedom and free speech, and it is hard to disagree if you look at the charges against Durov. Telegram isn't the only messaging application that illicit things happen, except these authorities want telegram to spy into chats and groups of their users, while lying to them that they don't.