Update from IO.
The live team has fixed a huge number of things for a patch, which is currently being tested. I believe it's on it's way to PC today and consoles ASAP as well. We're getting a bunch of crash fixes in there, which should reduce, and for the vast majority, remove the save game crash issues.
However, we are not able to fix corrupted saves so if you're worried about your saves, please make backup copies of them.
As soon as we know more, we'll keep you informed. I'm very sorry about the delays in both patches and information but identifying issues just take time and potential radio silence isn't because we don't want to share anything - it's because we don't have the correct information (until now).