There are parts of this route that will be sketchy with the snow on it. There are downsloping slabs on a couple sections of this route that may be hard to avoid. Like Misha says go there expecting some harder 5th class climbing on a route that's normally exposed 3rd class.
This photo was taken on October 7, 2009 and shows one of the sections of downsloping slabs. There was a thin layer of ice on the route from a cold snap we had last fall.
This is a shot of Mt. Russell taken from the top of Whitney this past Saturday March 27. The East Ridge always looks fairly dry from the south side but the north side will no doubt still have snow on it.