We're hearing rumors today that Microsoft's already hardworking Mediaroom could be putting in overtime in the near future. According to ZDNet, not only is Microsoft working on a Mediaroom client for Windows Phone (aka Rome), but it's also got a Silverlight-for-Mediaroom project (aka Taos) in the pipeline, with a possible Silverlight-for-Mediaroom STB (aka Santa Fe) also on the way. As if it didn't already have a heavy workload, the platform is also up for a possible tie-in with Windows Media Center (aka Monaco). All thi