It was a claim quickly countered by others that thought the team had underestimated the effects of dust in our galaxy. The counter claim has now been boosted by a new analysis from the ESA's Planck Satellite.
Planck's researchers discovered that the part of the sky the BICEP team is observing contained significantly more dust than it had assumed. Although it doesn't mean the original claim by the BICEP team is wrong, it does put it into serious doubt. Both groups are working on a joint assessment of this new data and will release the assessment of the implications near the end of the year.
In the eyes of many scientists, the analysis by Planck will shake confidence in the original claim of evidence for Cosmic Inflation; many considering the announcement to be 'premature'.
It's times like these that makes one remember the importance of through scientific investigation, other wise you run the risk of the "cold fusion" fiasco of 1989.