Earlier quoted context omitted.
Maybe because anyone who has used Safari knows that WebKit2's multiprocess architecture is worse in practice. As a full-time Safari user I can tell you that things have gotten markedly worse since it went multiprocess. Pages go white momentarily (not crash) all the time, and on top of that they also crash all the time. Additionally, I believe that unlike Chrome, Safari has ONE separate process for all the tabs, and t…
Wikipedia says WebKit2 has been part of Safari since Safari 5.1 which I believe was released with Lion, or so. So it absolutely is in production. The major difference here being that WebKit2 is part of the webkit project, so as the rendering engine (which sits atop both webkit1 and webkit2) is improved by all the various parties involved in WebKit's development, it gets better for everyone. Google's fork now means th…
That's in theory. In practice nobody bothered besides Apple.