Some blackberries and wild raisins are ripe. The mushrooms are fruiting in a big way.
I expect Algonquin will fill, so if you are making last minute plans, be sure to make a camping reservation. It will likely be an Algonquin overflow type of weekend.
Fishing has been really good the last while. Even newbies are catching some. Perch have been abundant of late, along with the regular bass, bass, and bass. Pike is a given too.