Actually they've been at the farmers' markets for about two weeks now. But they are just getting sweeter as the season progresses. There are almost 100 common strawberry varieties and probably more hybrid varieties. Each have their own flavor, season, and shape. The farmers are all great about letting you know which ones are sweet and which ones are tart, all you have to do is ask.
It's great to have fruit back at the markets. Soon we'll have blueberries, raspberries, and blackberries. Can't wait!