Opera 11 final version has been released and available for download.  Its easy to say main feature of Opera 11 is extensions support than of Tab Stacking.  Opera lacks behind Chrome till now due to lack of extensions support, Opera is always speedier and renders pages fastly much like Chrome.

Opera 11

What’s new in Opera 11

1. Opera 11 supports extensions, you can install extensions from Opera extensions catalog page and installed extensi0ns will be updated automatically.

2. Opera 11 Now offers Google search suggestions in the address bar and in search bar.

3. Opera 11 offers new safer address field by hiding web protocols. Opera 11 supports visual mouse gestures. Each Opera extension have options and Opera extension can be allowed to run in private browsing mode.

Read Make Opera 11 to Show Full URL in the Address Bar with Web Protocol

4. Supports new standards and HTML5  technologies means that rich, dynamic web applications and multiplayer games can be supported by Opera 11.

6. Plug-ins can be used on demand.

7.  Opera said goodbye to its classic installer, released their own speedier small installer which installs Opera 11 with in seconds. Opera 11 installer has portable install option also.

8 . Opera introduces tab stacking which is simple and efficient tab management feature allows to stack tabs by  dragging and dropping one over another. Tab Stacking is nice tab management feature when compared to Panorama.

Read How to Use Tab Stacking in Opera 11

9.  Due to security issues in WebSockets protocol design,  Opera turned off  WebSockets in Opera 11 as did Mozilla for Firefox 4 also.

Read Enabling websockets in Opera 11.

Download Opera 11