I've got adverts blocked on my phone so pretty much all newspaper sites don't display me anything so sorry didn't read your link !
Anyway, the one interesting point for me was this signal shifted frequency slightly as it would if coming from an orbiting planet.
So, presume those involved (if they haven't done so already) will be calculating if the signal's frequency shift equates correctly to what it would be if the signal had originated on either the rocky planet known to be at Proxima or from the gas giant there (perhaps from a moon).
And they will need to keep hunting for any other planets that Proxima may have.
And I also assume we will now be keep a constant monitoring going on of Proxima system.
And further, given this is our very closest neighbour, maybe it's time to set a mission heading to it anyway. The Voyagers have now made it past edge of solar system, but any new craft we could build now, ought to be able to travel further and faster and of course be far more advanced that half a century old technology.