I feel jaded. I know NASA has new evidence of water on Mars. I know this is true everyday when I wake up, because they've announced it so many over the last 10 years. I don't care any more.
Honestly at this point, if NASA ever finds the proverbial "smoking gun" they'll need to hold some never-seen-before massive press conference with fireworks, giant balloons, and celebrity guests to get anyone's attention.
Evidence of liquid water regularly occuring near the surface is very exciting though. This isn't cool because they might find H2O, we know that there is H2O, this is cool because having liquid water near the surface increases the chance of finding life.