WARNING: THIS IS NOT A THREAD FOR POLITICAL RHETORIC OF FIREFOX FEATURES. Violating posts will be reported.
If I missed something, Feel Free to let me know.
Things that were announced but has not shown up in nightly builds/Betas or turned on by default yet are marked in Red and with an asterisk(*).
List Of Firefox 4 Features:
Backend
+ Server Side
- Content Security Policy
- Strict Transport Security (A.K.A. ForceTLS) (Info)
- Do-Not-Track HTTP Header
- HTML5 Parser
- New Decoders for <audio><video> Vorbis/Theora/WebMedia Video(VP8) (WebM Discussion)
- Web Sockets (Disabled due to a flaw in the proposed standard)
- IndexedDB
- Media Attributes: Buffered
- HTML5 Forms: Email/Url/Search/Tel
- HTML5 Form Attributes: Autofocus/Placeholder/Multiple
- Constraint Validation API
- FormData
- Audio Data API (Info/Demos)
- WebGL(MDC Page)
- SVG Enhancements
- SMIL Animation
- SMIL Event Timing
- SVG In <IMG> tags
- Transitions
- Multiple Backgrounds
- Touch properties
- Resizing
- Calc
- 2D Transforms
- ECMAScript 5 Elements
- JaegerMonkey MethodJIT JS Engine
- JS Animation API
- Gecko Layers (Part 1, Part 2)
- Hardware Acceleration:
- Accelerated Rendering: Windows 7 & Windows Vista (Direct2D + DirectWrite/Direct3D10/Direct3D9 - D2D Discussion)
- Accelerated Compositing: Windows Xp/OSX/Linux (Direct3D9 & Open GL/ES - Direct3D9/OpenGL/ES Compositing discussion) - Infallible Memory Management
- MultiTouch Events
- Compartmental Garbage Collection (Info)
- Decode-On-Draw (Off By Default)
- Image Discarding
- Harfbuzz Font Shaping
- New DPI System
- -moz-element
- Indexed OGG Support
- Dynamic Cache Control
User Interface/Frontend
+ Styling/Toolbars
- NEW UI Refresh Windows/Mac/Linux (Mockups: Win, Mac, Tux)
- Firefox Consolidated Menu (Discussion)
- In-Content UI (Addons Manager)
- Per-Tab Modal Dialogs
- Bookmarks Button
- Add-Ons Toolbar
- Tab Animation: Open/Close
- Status Bar Removal
- Addons Bar
- Tab Matches (Info)
- Tabs-On-Top
- Panorama(A.K.A Uberview, R.K.A. Tab View, A.K.A. Tab Sets, B.K.A. Tab Candy) (Info)(Discussion)(Aza, please stop with the names!)
- AppTabs (Info) (Discussion)
- Web Console (Info)
- New Addons Manager
- Firefox Sync Integration
- 'About:Memory' Usage tracking: Malloc/WorkingSet/PrivateBytes/GFX/Storage/Layout/Images/Canvas
Bug Fixes
- Async APIs Places/Cookies/Images/Cache
- New/Faster Scrolling Method
- Startup Speed enhancements
- TraceMonkey NanoJIT JS Engine Enhancements/JaegerMonkey Integration
- Mac OSX Clickthrough fixes
- UserAgent Overhaul
- XPCOM Overhaul
- Restart-less Addons (Info)
- Lazy Frame Construction
- Lazy Services Initialization (For Performance)
- Tab Bar fixes & enhancements
- :visited selector privacy enhancement
- Storage API enhancements
- Cairo Library Updates
- SQLite Library Updates
- DOM Improvements: Floats/Shadows/Canvas
- CSS Parsing performance improvements
- DNS performance enhancements
- Critical Proxy fixes
- Session Restore fixes
- 'About:Cache update
- Image decoder refactoring
- Video scale refactoring
- Refactored "About Firefox" window
- Startup Cache (refactors previous startup method)
- Cache structure tweaks
- -moz prefix removed from box-shadow & border-radius
Miscellaneous Changes
- OmniJar Packaging (for faster startup)
- Integrated Start Page (About:Home)
- Gopher Support Removed
- Default Plugin Removed
- Remote XUL Removed
- js-ctypes API
- Services Module
- 64-Bit Support (Mac OSX only. Windows Platforms are targeted for a later release. Linux x64 builds are provided by the Distro.)
- Theme Agnostic Personas/Backgrounds*
- Archived Add-On Deployment
- Per-Site Privacy Settings for Local Storage
- Better Lightweight Extensions Support (JetPacks)
Once again, if I missed something let me know.
2/24/2011
- removed Drag/Detach animation
- removed Silent Updates
- removed Decode on Draw from Red, add "Off By Default"