thms - 4:27 am on May 12, 2013 (gmt 0)
The theories put around are that Google has been bringing it's tolerance thresholds down for "good" versus "bad" links and that the next update will lower those significantly. I guess it's a no brainer. Things are pretty transparent about what Google is intent on targeting even if the technicalities are somewhat obscure.
this is pure speculation.. there are a lot of no brainers that Google never implements..