No, they only ne4ed to soft-fork once. The soft fork will permanently freeze any Ether in The DAO and all of its clones (children.)
Does it apply to the hacked the DAO only or to the "rescued" DAO as well? If later, they will another fight to get it back.
It applies to the hacked DAO and all its clones. That's why the folks involved are pushing hard for a hard fork that would replace all DAO instances of code with simple withdrawal contracts. If that hard fork goes through, all of them will be emptied and the ETH recovered.
I think the soft fork will go up after the soft fork bug is removed. I am not sure about the hard fork to be implemented.