So I came up with a theory on how they could save Iris.

In the next episode Barry is going to the year 2024 to talk to his future self and I think Barry will get Emo-Barry to come back to the present to help fight Savitar, but there is something that could happen.

When H.R first came to Earth-1 he showed the team his device that changes his appearance to other people, I often wondered why they introduced that and assumed it was important for some reason. Perhaps Emo-Barry uses that device and takes Iris's place and dies, this would explain the newspaper article saying Barry disappeared in the year 2024. Iris would never write that article because she isn't Iris West-Allen, she is just Iris West and maybe she changes career pathway's.