if you did not catch it, this is the status as of April 28 from the official Park site:
"Open, but snow covered for the last several hundred metres. Park visitors should park at the top of the paved hill just before the Access Point and portage the last 300 metres to the water. Do not drive down the paved hill (April 28)."
Looks doable if you are willing to walk, maybe better than that with the warmer weather this past weekend.
.. Algonquin Backcountry Recreationalists - Caring for Algonquin's Backcountry