Potato bugs have arrived. Pick them off daily and smush or toss them in a pail of soapy water. Also watch for eggs on the bottoms of the leaves.
I haven't noticed any early blight on the tomatoes (yet). Yay! We're doing something right. If you do notice that the lower leaves of your tomato plants are starting to curl up and turn yellow, then brown, carefully pick off the affected leaves and put them in the black compost bin.