The announcement is available [online][1].

[1]: https://blog.rust-lang.org/2017/11/22/Rust-1.22.html

The announcement is available [online][1].

[1]: https://blog.rust-lang.org/2018/01/04/Rust-1.23.html

From the [release notes][1]:

> With this release, we’re building on the great foundation provided by
> our all-new Firefox Quantum browser. We're optimizing the performance
> gains we released in 57 by improving the way we render graphics and
> cache JavaScript. We also made functional and privacy improvements to
> Firefox Screenshots. On Firefox for Android, we’ve added support for
> Progressive Web Apps (PWAs) so you can add websites to your home
> screen and use them like native apps.

[1]: https://www.mozilla.org/en-US/firefox/58.0/releasenotes/