Although this date marks the ides of March, when Caesar himself was murdered by Brutus, we do not think this date signals the end of the Ballmerian Era, with Emperor Ballmer still seemingly in full charge of the massive Microsoft multinational mega-corporation, flanked by his multitudinous divisions of Windows workers, Office originators, Xbox architects, Phone 7 designers and wannabe tableteers.
The date is unlikely to bring forth any news of Windows 8, nor its new interface, while the updates for Windows Phone 7 have already started eking out, even if Microsoft was sadly unable to ensure all carriers released fully working updates on a simultaneous basis.
No new version of Office is due, the Xbox 360 still seems to have plenty of life left in it for now, following the Kinect creativity.
Perhaps it will herald the full launch of "Windows Internet Explorer 9", with the browser already having reached RC status a little while ago.
Unfortunately, we can but guess as to what Microsoft's announcement will be, for we are informed that 'full details will be communicated shortly', a time frame that could mean minutes, hours or even days.
After all, for anyone that has ever watched the Microsoft minutes move up and down when large files are copied, we all know that Microsoft's grip on temporal reality can at times be tenuous.
So, for now, the precise details of Microsoft's major March 15 announcement are much muted, save for details of the time and date itself.
All we can say is that we're interested to know what the announcement will be about, and we'll surely share with you more details once we have them, but for now, we can but utter the soothsayer's startling saying:
Beware the ides of March!