It will rain on Sunday. Snow is unlikely at this point for all areas of the mid-Atlantic. Maybe interior New England and Maine sees some decent snow out of this. Those areas will start as all snow and maybe change to ice or plain rain. The reason for rain is because the polar vortex is not pressing as much and there is an early phase of the northern and southern jet streams which causes a southeasterly flow over the east coast. I explained last night in my video how this was a scenario and now it looks like it will verify.
Here is GFS for Sunday..