Pocket lint - Put this one down as a mystery still yet to be unravelled.
It's being reported that Microsoft's UK head of marketing for mobile service in the UK, Oded Ran, tweeted:
"Daily #WP7 ANNOUNCEMENT: I'm glad to confirm that Mac users would be able to Zune on their Macs to sync with #WP7. More details soon."
The tweet, which was date stamped as 9.35pm on 12 October, has now disappeared though - meaning one of two things. Either Ran was wrong, or he was a little early with his public announcement.