The press made a lot of fuss about this claim. Unfortunately we have no confirmations nor denials, it would be nice to hear an internal about this.

http://thehackernews.com/2016/04/android-swift-programming.h...

http://www.dday.it/redazione/19590/app-android-scritte-con-s...

http://www.webnews.it/2016/04/08/google-apple-swift-android/

http://android.hdblog.it/n429420/Google-Swift-di-Apple-lingu...

https://www.tomshw.it/android-google-pensa-swift-apple-posto...