Servo is a research project exploring the design space of writing a modern browser from the ground up in a language designed for it. It's not being developed as

Servo is a research project exploring the design space of writing a modern browser from the ground up in a language designed for it. It's not being developed as a Gecko (Firefox internal framework) replacement. So I don't think they are making the mistake of restarting from scratch for their core product. The Servo project is done by a different team and Gecko development continues uninterrupted. No procrastination in that area is going on.