From a users' point of view, I am enthusiastic about the chrome apps. Having been using my phone and tablet way more than my PC, I am now used to the simplicity and ergonomy of mobile apps. Chrome apps allows me to find back almost the same experience on a PC.

From a developer's point of view, I would also say "so what? Cordova has been here for a while" but it is not a technological improvement, it's about releasing your apps to a broader audience.