Without going into details:
at 4.9 sigma confidence level (CMS)
at 5 sigma confidence level (ATLAS).
This is the discovery of a new fundamental particle. It is a boson and it’s spin is not equal to one.
You can also read the CMS press release at: http://cms.web.cern.ch/news/observation-new-particle-mass-125-gev
And the ATLAS press release at: http://atlas.ch/news/2012/latest-results-from-higgs-search.html