Lubos Motl has a really good post that cuts through a lot of journalistic hype and explains possibilities:

http://motls.blogspot.com/2015/12/first-batch-of-9-pheno-pap...

I'll just quote the summary:

> You see that the diversity of the explanations is huge – it's a landscape of possibilities. Whether you like it or not, whenever certain things are uncertain, the possible answers are diverse. String theory's landscape reflects the same principle in another, more consistent and more constrained, formalism. And the purpose of this new particle is simply mysterious at this moment.

> It seems very likely that the new particle is a j=0 scalar particle. And it seems guaranteed that it can't be the only new particle that has to be added relatively to the Standard Model. But who are the friends of SS and what is their relationship and purpose? Nobody knows. If this extra knowledge about the particle emerges, we may start to call it a heavy axion, a technicolor or composite scalar, a pseudo-Nambu-Goldstone boson, or – which I find more likely – a new Higgs boson analogous to the (three-year) old one.