New Features:

• Core | Client support for the 'trackerid' announce extension
• Core | Client support for the 'min interval' announce extension
• Core | Added options to disable scrape entirely or just for non-running torrents
• Core | RSS Feed parse APIs added to plugin interface
• Core | Non-blocking sockets based TCP tracker implementation
• Core | Client identification plugin interface
• Core | Separate protocol payload and overhead stats
• Core | Data deletion can now defer to Recycle Bin and Trash under Windows and Mac OS X, respectively
• Core | Distributed Database
• Core | Decentralised tracking
• Core | Magnet URI for location of decentralised torrents
• Core | Ability to update built-in plugins independently of the core
• Core | Diagnostic collection for system properties and config settings
• Core | added option to move newly completed seeds to the end of the seeding list, rather than the front
• Core | Support for I2P plugin
• Core | Network selection support (public, i2p, tor)
• Core | Inter-client peer exchange
• UI | Option to disable small fonts under OSX
• UI | Console support for aliases
• UI | Torrent export option added to SWT UI
• UI | Keyboard shortcut parsing system
• UI | System tray menus for setting global upload and download bandwidth limits
• UI | Synthesized speech alerts for Mac OS X; Go to Azureus / Preferences to enable it
• UI | New file icon for Mac OS X
• Plug | Added local host configuration setting for statusmailer
• Plug | Reworked CSS for tracker web pages to create old and new styles
• Plug | StartStop Rules: First Priority ignore Rules: 0 Peers and SeedsPeers Ratio
• Plug | RSS Feed added to tracker web pages
• Plug | Tracker stats added to tracker web pages
• Plug | Generic Messaging API: inter-client message passing
• Plug | Joltid Peer Cache plugin is now bundled with Azureus
• Plug | I2P plugin

Changes:

• Core | Smarter re-announce interval handling, especially for lopsided swarms
• Core | Added many new peerid identifications
• Core | First piece priority option now also prioritizes last piece of file
• Core | NAT check functions even when downloads have already been started
• Core | Update check can now check via configured proxy
• Core | Rewritten download code: decreased cpu usage and faster speeds in LAN network environments
• Core | Network IP_TOS option now sets required registry setting under Win2K/XP
• Core | Favor establishing inbound peer connections, to increase the health of swarms with firewalled clients
• Core | Improved seeding unchoking algorithm: distributes data more evenly
• Core | Anti-leech code to prevent optimistic unchoke leechers
• Core | Reduced threads required for multiple torrents
• Core | Relaxed cross-torrent file locking to permit multiple read access
• Core | changed HTTP user-agent to include OS and java version
• Core | max cache size limited to 32M less than VM size
• UI | Reintroduced download completion alerts in Mac OS X (use System Preferences / Sound to set the alert sound of choice)
• UI | For Mac OS X, contextual menu items no longer carry images for better compliance with Apple Human Interface Guidelines
• UI | RFE #1092614: Informational popup messages now auto-close after 5 seconds - unless the message window is closed manually, or if the mouse is over it / details view is open (the timing will be 'reset' then)
• UI | Miscellaneous cosmetics updates for Mac OS X
• UI | Bug #1112278: https:// URLs now autopaste in Open URL window
• UI | Main menu bar should now be more streamlined in its arrangement
• UI | Console view will now display information logged (for the duration of the application session) when the Console view is closed
• UI | ETA and remaining now take into account DHD files
• Plug | More choices in First Priority ShareRatio

Corrected bugs:

• Core | IPFilters loaded from static config file weren't working
• Core | Fix re-announce interval bug when zero peers in swarm
• Core | Send uninterested message when complete while using do-not-download feature
• Core | Optimistic Connect, when seeding, no longer drops just random connections
• Core | Better recovery from corrupt resume data
• Core | Better handling of invalid torrent save locations
• Core | fix for SSL (https) problems introduced by changes in JDK 5.0
• Core | fix for hash-fails when running with cache + incremental file creation enabled
• Core | Fix scrape processing stall bug when scrape url was invalid
• UI | Corrected save dialog behaviour on Make Torrent Wizard regarding file selection
• UI | Bug #953619 concerning Mac OS X: Double-clicking .torrent files now activate Azureus with the expected Finder dialogs (Dragging files to the Dock icon will continue to malfunction for the indefinite future)
• UI | Bug #1120995: Improper validation could allow unreasonably low global upload cap
• UI | Main window no longer tries to steal focus on opening (Mac OS X)
• UI | Pop up messages no longer try to steal focus (Mac OS X)
• UI | Resolved fuzzy dock icon display under Mac OS X if Column Setup is opened
• UI | Upload caps for individual transfers now display more sensible values if global upload cap is set to unlimited
• UI | In My Torrents, a category view will no longer prevent its corresponding table view's horizontal scrolling
• UI | Download bars should no longer disappear when the main window is minimized (Mac OS X)
• UI | Certain table column contents no longer 'disappear' when a row is selected (Mac OS X)
• Plug | StartStop Rules: Autostart Seed Count Only and Prefer Large Swarms removed First Priority