The DNR has apparently already stocked trout for opening day. These are a "put and take" fishing option. Typically the trout get "fished out" fairly qucikly, but they do provide a relatively easy option for "keeping fish" during the first few weeks of the season.
Area lakes traditionally stocked with trout for the opener include:
Trout are considered a gamefish in these waters, and therefore you can't keep any you catch till next Saturday.
If the DNR releases additional information on trout stockings for this season before the opener, I'll be sure to post it here.