A rewrite has been done for the tab systems in web browsers and text editors which will definitely benefit Epiphany and Gedit users. This will give users:
- better pinned tabs
- unread indicators
- indicator icons (mute/unmute)
- autohide when only one tab
- better touchscreen support
- animation on events, such as closing, creating, dragging tabs
- "tabs can be reordered, moved between windows, dropped on desktop to create a new window, tabs can accept arbitrary data being dropped" and more.
The list under
What it provides heading is impressive.