Yahoo mail app gets updated with new features for IOS and Android.
Yahoo mail app now support multiple accounts for gmail. So you can add your gmail account on your yahoo mail app.
According to blog here are some new features:
Sign in,Password free: now you don’t need to remember complicated password,with the use of account key features you can sign in with your account in a single tap.
Compose engaging emails: you can add photos,videos, files easily.
Search smarter: you can search mail very quickly and easily.