http://profmattstrassler.com/2014/03/17/bicep2-new-evidence-of-cosmic-inflation/Matt Strassler's blog is worth a look.
Naturally, he is cautious, as usual, but is updating as new info comes in.
"As always, I have to caution you that although I’m fairly impressed, and reasonably optimistic about this measurement, it is a measurement by only one experiment. Until this measurement/discovery is confirmed by another experiment, you should consider it provisional. Although this is too large a signal to be likely to be due to a pure statistical fluke, it could still be due to a mistake or problem, or due to something other than gravitational waves from inflation. The history of science is littered with examples; remember the 2011 measurement by OPERA that showed neutrinos moving faster than the speed of light was far too large to be a statistical fluke. Fortunately there will be other experiments coming and so we’ll have a chance for various experiments to either agree or disagree with each other in the very near future."
