If the signal was cast in all directions — an isotropic beacon — it would classify as a Kardashev Type II civilization, which would be capable of harnessing the entire power of their sun.
For now, no one is saying it's aliens. The scientists involved have found the signal noteworthy and are beginning to put telescopes in a position where more signals, if they are intentional, would be found. The SETI institute has diverted the Allen Telescope Array in northern California for continuous monitoring.
However, there are plenty of dissenters who think there's nothing to see here. Daren Lynch from SETI@home says, after looking over the raw information, "I was unimpressed. In one out of 39 scans that passed over star showed a signal at about 4.5 times the mean noise power with a profile somewhat like the beam profile... it takes more than that to make a good candidate. Multiple detections are a minimum criterion."
Lynch found it "relatively uninteresting," but others are intrigued. The signal will be discussed further at the IAA SETI Permanent Committee during the 67th International Astronautical Congress in Guadalajara, Mexico on Sept. 27. That's the same day and location that Elon Musk plans on unveiling his plans for colonizing Mars. If you have the week off, it's a great place to try out that new Fox Mulder cosplay suit.