Today we’ve got developer update for you.
You can check how address bar speculative prerenderer works on google.com site. As a reminder – when you type something, the browser uses the previous behavior to predict which web site you intend to load. If it finds a match, it will start loading that website in the background. Previous behavior means all previous address bar inputs which led to loading a specific web site. Also when you search for something, it will load the results likely to be clicked, in the background. Please note that this feature is not working on address bar yet.
There are many video popout fixes included.
More detailed description in the full changelog as always.