Admittedly I may be promising too much with that title: Microsoft isn't exactly sharing its plans in detail but they certainly are making it clear that their vision differs slightly from that of Google and other browser vendors when they recently published a post titled 'Customizable, Ubiquitous Real Time Communication over the Web (CU-RTC-Web)' on the official Skype blog.
So what did they announce? In the post several key Skype/Microsoft engineers (headed by Matthew Kaufman who many Flash developers will remember as the inventor of RTMFP) explain Microsoft's contribution of the CU-RTC-Web proposal to the W3C WebRTC working group.
So why is Microsoft submitting their own RTC proposal to the working group? In short Microsoft thinks that the existing proposal falls short in several areas. According to Microsoft it doesn't address interoperability between different types of clients (not just web browsers) very well ("instead focuses on video communication between web browsers under ideal conditions") and also needs more flexibility when it comes to media formats and codecs.