الجديد في البرنامج
Fixes and stability enhancements:
* General and User Interface
- New rendering engine based on WebKit
- New user interface
- New capabilities
- New features
- Improved site compatibility
- Silent auto updates

New features:
* Combined address and search bar
-  combines the address and search bar, allowing for multiple predictive  results that can be filtered by search engine. This bar includes options  for adding current pages to Opera's Speed Dial or Stash, and expandable  page information.
* Enhanced Speed Dial
- allows you to combine Speed Dial entries into groups, and introduces a search function that filters through entries.
* Stash
-  introduces Stash - a feature that records the location, meta data, and a  screenshot of a page. It places this information into a collapsable  list entry on the browser's Start Page, that can be searched by keyword  and/or scanned visually by screenshot.
* Discover
-  A recommender service is included with Opera 15. Discover displays news  and topical content that can be filtered by category or  location/language.
* Off-Road mode
- adopts the server-side compression technology used by Opera Mobile.

Improvements since Opera 15 Next:
- Stability enhancements
- Reintroduction of mouse gestures
- Improved address field behavior
- Improved proxy support
- Performance improvement for retina display on Mac
- Support for 64-bit versions of Windows Vista and XP
- Support for migrating Opera 12 profile data