As someone in the malaria field, I find it incredibly random that there are so many articles on this over the last 1-2 days, although this vaccine has been in development for decades and most of the well-cited results were published weeks or months ago.
But anyway...
Although this is not a perfect vaccine, it could be an awesome thing. One of the biggest problems with malaria is eradication. In places where mosquitoes live through most of the year, it is very difficult to control malaria through medication alone (you treat a patient, but 2 weeks later they are reinfected...or, you treat them but don't kill latent parasites, leading to relapse and yet more spread). Although this vaccine may not be perfect, it means that there may soon be fewer reservoirs for parasites. This means that drugs and vector control will have a bigger impact when it comes to eradicating disease, and that is a step in the right direction.
Also, malaria is notoriously tricky when it comes to immune evasion. The fact that a working vaccine exists that involves malarial protein is a pretty big deal in itself.
Also, for the sake of discussion: there was a similar media blitz for this about 8 years ago. Discussion died down when some secondary side effects came out of the woodwork (higher likelihood of death or neurological damage due cerebral malaria in treated individuals, etc).