It looks... okay. I'll leave the technical issues (such as non-responsive elements) to people with more skill to critique them.

My main issue with the redesign is that it's too generic. It doesn't look that much different than any other site. My personal preference would be something very much like this new design but that incorporates more of the signature things that make Slashdot look like, well, Slashdot.

A good example of a site that pulls this off is reddit. Reddit actually looks quite a bit different from the way it did when it launched, but it still looks like reddit. I think this is primarily because reddit doesn't like launching "THE" new design every once in a while. Its strategy is more of constantly tweaking the look of the site. I think Slashdot should take this approach.