Alitalia is currently under bankruptcy protection.
Oct 2 is the deadline for bidding on Alitalia's acquisition by prospective buyers.
So far RyanAir and others like Lufthansa and also some equity funds have expressed an interest, but I don't know if they have formalized a bid and in what terms.
If nobody buys, the company will be wound down and its assets sold. If someone buys the company, in whole or in part, they may probably honor your ticket.
However, for now, until we know for sure, I woundn't buy any trip with them if the trip takes place after Oct. Then once the dust settles we'll see, but now I'd consider it risky.