Re:Mozilla Foundation Security Advisories
by steveklabnik on Saturday April 30, 2016 @09:40AM
(#11601638)
Rust code is already in Firefox 45 for Mac and Linux, the one you can download right now. Should be in Windows soon. It's just a very, very small amount, but it's a start.
Well there is Servo https://github.com/servo/servo and
> Ship one Rust component in Firefox Nightly, riding the trains
from https://github.com/servo/servo/wiki/Roadmap
Regarding Pwn2Own it seems that Firefox would be in the competition again once electrolysis (one process per tab) is introduced.