Found a report from Friday, Apr 19:

Went up Friday to Trail Camp, only one there that night and had no problems finding the trail. Some of it is snowed over but should not be an issue. Summitted and came back Saturday afternoon. There were trails everywhere thru the snow. A lot of people making their own. Stay to the right after the switchbacks up from Mirror Lake to Trail Camp. Prepare for some minor postholing.

I wore crampons up the chute (west of the switchbacks) but nowhere else (not even sure they were needed due to the soft snow and potholing). No crampons from Trail Crest to Whitney peak and not used to come down the chute or back to Whitney portal. Snow shoes might be more useful depending on how conditions change.