This could be monumental. A high amount of skepticism is necessary for the moment, though. The much more likely possibility is that the researchers made an error somewhere, which is why they're asking for other teams to independently reproduce their findings. However, I'd be lying if I said wasn't excited that the very foundation of physics (that nothing can travel faster than light) could be rocked to its core.
Here's another article regarding the discovery:
Roll over Einstein: Law of physics challenged