The first notable addition is the ability to create links to specific bits of text in a webpage. Users can highlight any part of a page, right-click it, and choose the "Copy link to highlight" option to create a link that opens the page in that specific part of the page. Last summer, Google released a Chrome extension called Link to Text Fragment that did the same thing, but it's now part of the browser itself. This is rolling out on Android and desktop versions of Chrome first, with iOS coming soon.
Next up there are some improvements to the PDF reader in Chrome, starting with a new side bar that features thumbnails for all the pages of the document, making it easier to jump to a specific page more quickly. There's also a new presentation mode that hides all the UI elements to focus on the document itself, and new tools like a two-page view and an updated toolbar at the top with quicker access to controls like zoom and print. This is all rolling out now on for desktop users.
Another notable addition is support for renaming your Chrome windows, which should help with managing different projects and their related tabs. To rename a window, users can right-click an empty area of the tab strip. This feature is rolling out now.
Finally, building on the performance improvements that Google has already delivered with recent updates to Chrome, the company is soon making it so that collapsing a tab group freezes all the tabs inside it. Currently, tabs are frozen after they've been inactive for a while, but this will expand the scope of tab freezing. This will be available in beta soon, so a stable release will have to wait a bit longer.