There’s a fresh beta of Windows Live Writer now available which I found out about via Greg Duncan’s blog where he gives a brief outline of of changes:

• Tagging support
• Support for Blogger Beta
• Categories are sorted by name and support scrolling, plus improved support for reading categories from your blog
• Improved startup performance
• Paste is enabled for Title region and TAB/SHIFT+TAB navigation between title and body supported
• Insert hyperlink added to context menu when text is selected
• Title attribute in Insert Link dialog
• Custom date support for Community Server
• Improved keyboard shortcuts for switching views
• Change spell-check shortcut key to F7
• Add ‘png’ to insert image dialog file type filter
• More robust image posting to Live Spaces
• Improved style detection for blogs 
• Fixed issues with pasting URLs and links
• Remember last window size and position when opening a new post
• Open post dialog retrieves more than 25 old posts