I hate to go against what the OP said, but Cast Members say a lot of crazy things that aren't true. Disney has never offered
free dining to the general public for June and July... because they don't need to offer it. It's one of their busiest seasons. I will be shocked if they come out with free dining as a general public offer for summer. I'll believe August and September as they've been doing that for years, but June and July is a stretch. Cast Members rarely know about discounts ahead of time, so it seems crazy that one CM in reservations would be telling people about it two months ahead of time. I hope it does come true for those wanting it, but I think it's more likely that a CM was talking without knowing what they were saying.