Hello,
Welcome to the Italiapass community. To help answer your question. The trainline does not release all of the schedules at the same time, usually the routes are released 60-120 days prior to departure. Some routes may be available for booking but the closer to the date the more options will be available. If you go to our site and search routes it will give you the option to enter your email address to be notified of when the routes are available for booking. Also please be aware that the trainline is currently working on those tracks for the route and it may delay showing what routes are available currently.