This 10 year old firm was at the Wearable Technology Conference in London a couple weeks ago where they showed off their latest work in repellent nano-coating technology. This tech is designed to be used as a coating on the internal electronics of mobile devices and will keep it waterproof without impeding the function of the device.
Similar tech is already showing up in aftermarket modifications to existing products, including the waterproof Kindle from Waterfi. It's still the exception and not the rule, but as the cost goes down I would expect that this type of waterproofing will show up in more and more tablets and smartphones.
The first to use it on a wide scale will probably be Apple, or possibly Samsung. But Apple is the most likely candidate because they have both the profit margin to afford the cost and a large enough production volume that the additional cost would be minimized.
Sure, this tech doesn't add that much functionality, but I can easily see Apple adopting this just so they can have a useful feature no one else has. I can just see Tim Cook dunking a new iPhone in water just to show off.