I cannot comment on actual conditions - haven't been there yet this year and I doubt anyone else has after the last storm. That said:
1) be prepared for non-trivial post holing, given the amount of recent snowfall
2) E-Ledges may be very slippery, direct path alone the creek may be a post holing nightmare
3) the slope right below Iceberg lake is an avalanche trap, IMO more dangerous than the MR proper
4) beware of powder on rocks on the final section, after exiting the notch... are you soloing it or protecting it?
5) last but not the least, storms do sometimes move in earlier than forecasted and climbing parties often get delayed ...
Have a great trip - My Best Vacation Is Your Worst Nightmare!
P.S.: Kurt Wedberg posts detailed updates on MR conditions on whitneyportal message board every time he takes his clients up. I would at least go through his older posts to get a better idea.
Edit to add: it seems that you are planning to do the route C2C. If that is the case, definitely prepare to bivy. To give you an idea: my worst approach after a recent storm was 10+ hours from car (parked ~ 2 miles below the trailhead) to camp just above UBSL. It was mid-February of high snow season and we did not have snowshoes. We climbed East Buttres on the following day and had a blast. Met a party who approached on skis and flew up and down in a day like it was a walk in a park.
Last edited by Anton; 05/21/19 08:52 AM.