Blanket unavailability 3 months in advance is not because all trains are booked out, it will be because they haven’t been released for booking.

Holding back  schedules is normally done when there is possible engineering works on the lines and they haven’t yet finalised the timetable for those days.

All you can do is hold tight and wait for these to be released whenever Trainitalia get it sorted.

We’re looking ~75 days in advance, and reservations and full bookings are available bother the week before and the week afterwards. Really appears to be something special in Italy around that weekend.

@Angelo Do you have any information regarding this?

The worst thing about this is if you look at available fares when NOT logged on, the reservation costs come up fine.

As soon as i Log in to book, the error message appears as above.

Frustrating!

This is because until you're logged in the website does not give availability/up-to-date infos, it only shows the "generic" 13€ (+2€ fee) price.

I wouldn't worry at all. November is still a long way and not a busy period at all. There are likely engineering works and the finalised timetable will be published in the coming weeks.

Sounds feasible - it’s like every high speed service south of Milan and Turin that appears to be effected that weekend.

Hello thanks for flagging @AnnaB, sorry for the late reply. 

On trenitalia.com there is also not possible to book any high speed train for this two days. This means there are works on the line and they have to wait for the timetable. Please check for the next weeks or look on it in 1 month. Normally trains do not get full in Italy (except like Christmas or Summer weekends), booking should be possible some days before for all trains.