Every year since the first year Pennsylvania experienced late blight in the tomato crop (thank you big box store garden sections) my tomatoes have had late blight. This year it seemed to take a little longer to get going, but here it is.
There are a few tomato varieties available that have a resistance bred into them (no GMOs here thank goodness) and are showing some promise. Here is a link to a site listing the varieties. While the list is no where near the amount of varieties I can get from our local Mennonite farmer, with his 70 different heirloom varieties, if I don't loose tomatoes from disgustingness it might be worth it.