Among the multitude of things I'm currently mulling over is whether Microsoft's post-Vista OS really will be called Windows 7. Microsoft itself seems determined to punt this name around now. So if it isn't a final name, why is it being used?

After all, the OS has had not just one but two other codenames – Blackcomb first (a mountain/ski resort, following on from XP's Whistler and Vista's Longhorn) and then Vienna. Quite why the Vienna name was dropped remains a mystery. However, could Windows 7's new name have something to do with new boss Steven Sinofsky?

He was formerly in charge of the Microsoft Office development programme and the next release of Office is routinely called after a version number. Office 2007 was Office 12, while the next version is Office 14. No superstitious 13 of course.

It's very likely that Windows 7 is just an internal name. As well as being a lucky number, 7 is also unlucky in some territories. And software developers are notoriously superstitious beasts. We'll find out whatever it is next year – unless somebody lets the cat out of the bag early of course.