The University of Sydney have continued research of polywell reactors. I'm not terribly across their progress but I try to read papers whenever they're released though I haven't read any of their 2013 papers. It seems the last few years (2010-2012 at least) have focused around minimising point- and line-cusp losses.

More reading here: https://en.wikipedia.org/wiki/Polywell#University_of_Sydney