As others have mentioned, while this article is about Test Pilot and focused around how you can help with UX experiments, there are lots of wonderful devs hard at work on platform features.<p>Some are just starting to land after literally years of work:<p>You might be more interested in reading about platform improvements like getting Servo&#x2F;Rust components into Gecko:
<a href="https:&#x2F;&#x2F;blog.servo.org&#x2F;2016&#x2F;05&#x2F;09&#x2F;twis-62&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blog.servo.org&#x2F;2016&#x2F;05&#x2F;09&#x2F;twis-62&#x2F;</a><p>Or progress in multi-process support (codename e10s):
<a href="http:&#x2F;&#x2F;arewee10syet.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;arewee10syet.com&#x2F;</a><p>While these are focused on Firefox to improve performance, stability and responsiveness, there are also experiments like the Positron project, which is making Gecko able to host Electron applications:
<a href="https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;positron" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;mozilla&#x2F;positron</a>