Via the Ask Jeeves Blog: http://blog.ask.com/2005/11/new_ajds_update.html

Ask Jeeves Desktop Search Client (http://sp.ask.com/docs/desktop/index.html) has been improved...

-- Folder Indexing Preferences (choose what to index!)

-- Improved PDF indexing

-- Email attachment name indexing

-- Improved Zip file indexing

-- Enhanced previews for Office files

-- Indexing of iTunes metadata (search by title, artist, album, genre, and year)

-- Search term highlighting

-- Full Outlook Express support

-- Pause indexing (with new animated indexing graphic)

-- Improved stability overall

-- New homepage with most recently viewed files

-- Improved status callouts

-- Writely document search (yes, Web-based word processing search...in a desktop search tool!)

(For those who have been asking about API and Extension support, rest assured they are on the roadmap.)