Both companies have decided to put resources into the project although there is no target date for having the software available. With Samsung's help, Mozilla wants to bring the Servo browser to Android and ARM. Thus far, the Korean tech titan has provided an ARM backend to Rust as well as the build infrastructure needed for Mozilla to cross-compile to Android.
Mozilla is currently working on getting Firefox OS out and Samsung continues to flex its muscles in front of Google to let the Mountain View based tech titan know that the Korean OEM is not a Google hand puppet playing in the Android Theater. It is the same reason why Samsung is keeping Tizen around, to let Google know who really is responsible for Android's success and to make Google concerned that at anytime, Samsung could take its ball back and go home.
source: TheNextWeb via AndroidAuthority