I am organizing an Interrail trip for this summer, and I was planning to travel on July 27 on the Nightjet 40233 from Vienna to Rome. I have seen that trenitallia has already published the summer timetable so I often check to see if the train is already on sale. However, when looking this afternoon I saw that none of the trains that go to Italy (Milan, Venice) are available to buy, and their timetable already came out months ago. I have searched obb scotty and it appears that there is construction work between Villach and tarvisio between July 12 and July 28, so many day trains will not be available and night trains will be rerouted. Therefore I don't know if I should wait for the summer trains to Rome to leave since I'm not sure if the one on the 27th will be available so I don't know if I should start looking at flights. If anyone knows if these trains are going to go on sale one day, please help me. Thank you
P.S: All trains that go to Venice before July 12 and after July 28 can be purchased, so it is not a problem that the summer timetable has not been released.