Neuerungen:
Latest security updates
Improved stability
Improved compatibility
Improved JavaScript and application launch performance
Resize windows from any side
New keyboard shortcuts
Additional font smoothing option
International text input methods
Advanced text (contextual forms, international scripts)
NTLM support
PAC file auto-detection
FTP directory listings
Link to proxy settings from Safari (Safari respects the proxy settings in the Windows Internet control panel)

Quelle:
http://1303.at/2405/apple-safari-304.html