I just got this mail
We are writing to let you know that the Fabric Crashlytics SDK is now deprecated and will continue reporting your app’s crashes until November 15, 2020. After this date, the Fabric Crashlytics SDK and beta versions of the Firebase Crashlytics SDK will stop sending crash reports for your app.
We are replacing Fabric Crashlytics SDKs and beta versions of the Firebase Crashlytics SDKs with the generally available Firebase Crashlytics SDKs.
To continue getting crash reports in the Firebase console, make sure to upgrade your apps to the Firebase Crashlytics SDK versions 17.0.0+ for Android, 4.0.0+ for iOS, and 6.15.0+ for Unity before November 15, 2020.
The following project(s) linked with your account include apps that have enabled Crashlytics:
As always, if you have any questions or need any assistance, feel free to reach out to us for more assistance.
Shobhit, on behalf of the Firebase team