Following revelations that will be shipping Vista Service Pack One (SP1) next week, Microsoft has apparently confirmed – by mistake – that it will be available online today (Tuesday 18 March). At the time of going to press, though, SP1 didn't feature on Microsoft's online update site.

Computerworld reports that, in seeking clarification on SP1's availability yesterday, a Microsoft spokeswoman inadvertently confirmed that users could download the update today.
In response to Computerworld's enquiry, the spokeswoman e-mailed back: ""When looking at Amazon's site, you will see separate listings – one for pre-orders of Windows Vista with SP1 integrated, and the current version of Windows Vista, which does not include SP1, and can be purchased now and easily updated with SP1 online beginning March 18."  
We've been trawling Microsoft's update site, , regularly all morning, but there's no indication of SP1 being generally available to the public. Bear in mind, though, that Redmond is a good nine hours behind South Africa.