GigaOM
The beta of Opera 11, released today, continues Opera Software's long tradition of innovating in the browser space by introducing a neat new feature: tab stacking.
- Opera 11 beta unveiled, now features tab stacking and extensions [TNW Apps] - The Next Web
- Opera 11 beta gets Tab Stacking feature - Geek.com
- Opera 11 beta released with tab stacking as a feature - Ubergizmo