Hey Julie,
I plan on being there from Mar 5-10 with my climbing partner. Our tentative plan is the mountaineer's route. Steve has commented that it seems a bit drier (relatively) than expected, but there was just a recent major snowfall last weekend. You can see all the new snowpack on the webcam.
I'm keeping an eye on the NOAA website, and the eastern sierra avalanche center for their weather/condition reports. I'm hoping for minimal snowfall in Feb, and freezing temperatures in March to keep everything in place

In anycase, I'll be going with snowshoes, mountaineering gear, and my radio tuned to NOAA's weather channel.