I knew the techs were working on the sidebar (or the left rail as they call it) and the new design has been implemented on Jalopnik. But for a while I was seeing the new design on my desktop computer, though not on my iPad. And now it's back to the old version.
I'm guessing it was a test and probably not meant to be live yet. The trending stories at top are easy to ignore so I don't mind the return of those. I do like seeing who wrote the popular stories, though it seems to be just the top three instead of the long list we have now.