Is this really as big a deal as NASA is making of it?

Data from recent missions to Mars has been building toward a confirmation of the presence of water ice. However, “this would be the first time we held it in our hands, so to speak,” says Bryan DeBates, a senior aerospace education specialist at the Space Foundation. Evidence from other locations in the solar system, including Earth’s moon, Saturn’s Enceladus moon and Jupiter’s Europa moon, have strongly hinted at the presence of water–NASA confirmed a liquid lake on Saturn’s Titan moon on Wednesday–but no direct observation of water has been made.

Haven’t we been pretty certain for years that there was ice on Mars (and outer planet moons, and comets)? What’s the big deal here? If there’s a story at all, it seems to me that it’s about the amount of water available, not the fact that we have “direct confirmation.”