Yes, this is part of those efforts. The UI redesign and performance projects are part of a cross-functional group working on making Firefox faster. They've ta

Yes, this is part of those efforts. The UI redesign and performance projects are part of a cross-functional group working on making Firefox faster. They've talked about how part of the reason for square tabs is that they're much faster to draw for example. Weekly newsletters about the "Quantum Flow" performance project here: https://ehsanakhgari.org/blog/2017-03-09/quantum-flow-engineering-newsletter-1 https://ehsanakhgari.org/blog/2017-03-09/quantum-flow-engine...