It's great that Apple finally decided to do this, but strange that they didn't advertise it. Perhaps this is a test for the iPhone 7. If the sealing goes well, Apple can improve upon it even more next year and advertise it as a feature without hearing from tons of users about how they fried their phone. The iPhone 7 is likely to be an even more simplified design, so waterproofing it should be even easier. At the very least I think they'll advertise the next iPhone as water resistant—kinda similar to the Apple Watch. Could you dunk it? Yeah, but they don't come out and recommend it in case something happens.