In 2025, we rolled out one update after another, all aimed at making your browsing better — with more flow, speed, choice, and control over your information and experience. Your window to the internet, whether on desktop, mobile, or across all your devices, has gotten an upgrade this year.
Tab groups only provide a visual way of grouping tabs purely for organization & tab management considerations. Containers actually separate things like cookies, browsing history, etc. so that the APIs that let you query that in a web app only see things related to the domain of that container, i.e. the sites you have open in it. Containers are actually less of a protection now that Firefox separates cookies and stuff even outside of containers, but they still help break up tracking cookies, etc, so that you maintain a little more privacy than you’d have otherwise. Tab groups do nothing for privacy
right so the auto-grouping of containers that TST has had for years is basically the same thing.
Just curious, what is TST?
[EDIT: oh, tree-style-tabs, got it. Given that, the rest of my comment is superfluous]
But I think there’s more to tab groups than what containers provides. You can’t collapse all the tabs in one container down into a small representation of that group, for instance. Nor does it provide for a mechanism to move all the tabs in one group together along the tab bar, and reorder entire groups among other groups.
I think their concerns are orthogonal. The only really similar thing about them is that containers use a color coding visual style similar to tab groups. They lack a lot of the niche features that make tab groups really sing