Earlier in February was an update on Mozilla Servo shared at FOSDEM by Mozilla platform engineer Josh Matthews. The slides and videos of this new Mozilla browser engine are now available. Servo continues to be written in Mozilla's Rust programming language and the main focus of Servo over Gecko is on parallelizing the web-browser. Besides aiming for better performance with Servo, the browser security should also be greater than Gecko.
Those wishing to learn more about the current state of Servo can see the slides and video recording; thanks to Phoronix reader Nathan VanCamp for pointing out this material finally being made public.