Microsoft has changed the codename of the Windows operating system that will follow the forthcoming Windows Vista.
Windows Vista will appear towards the end of this year, after previously being codenamed Longhorn.
The next version after Vista was originally codenamed Blackcomb, but this has now been changed to Vienna.
The current Windows XP operating system was codenamed Whistler.
It seems Microsoft developers have a penchant for Canadian ski resorts, as both Whistler and Blackcomb are skiing areas north of Microsoft’s Seattle headquarters.
Longhorn is also the name of a bar in a Canadian ski resort. No launch date has been declared for Vienna.