OK, it's still unclear why they're bothering, but Apple is clearly improving Safari 3.x on Windows at a pretty impressive rate. Here's what's new in the latest version:

The Safari 3 Beta for Windows version 3.0.4 Update is recommended for all users running Safari 3 Beta for Windows. It includes new features as well as improvements to stability, compatibility, performance, and security.

New features:

  • Allows windows to be resized from any side
  • Includes an additional font smoothing option ("standard")
  • Adds International text input methods
  • Adds advanced text options (contextual forms, international scripts)
  • Supports NTLM
  • Includes auto-detection of PAC files
  • Supports listing FTP directories
  • Links to proxy settings from Safari (Safari respects the proxy settings in the Windows Internet control panel)
  • Adds cookie management
  • Adds LiveConnect support
  • Includes tooltips
  • Adds spell checking and grammar checking
  • Allows printing of page numbers, titles, margins
  • Improves bookmark collection interface
  • Maintains original order of imported bookmarks
  • Adds an interface for editing AutoFill information
  • History searches now search the full text of visited websites
  • Adds a new preference to manually mark RSS articles as read
  • Includes support for tilt wheels
Just adding support for the Forward and Back buttons on my mouse makes this about 200 percent more usable.