While the big news of the day may well have been Google's announcement of its Chrome OS, it seems Microsoft is waiting to make a big announcement of its own next week.
Ex-Microsoft employee and tech head Robert Scoble, has used his Friendfeed account to question Google's motives for announcing its OS when it did.
"Why did Google announce Chrome OS this week?" his post read. "Well, of course, Microsoft has a big announcement coming on Monday (I'm embargoed)".
Intriguing. The Microsoft World Wide Partner Conference starts in New Orleans on Monday, so this certainly seems feasible, if not probable.
However, what it could be remains more of a mystery. Suggestions have included the new Gazelle web browser, which touts a self-contained OS for web apps, or Office Web.
We'll be poised on Monday to get all the latest to you as it happens. Let us know what you think Microsoft could be announcing below.