I have actually updated this website after a number of years with the same design.
As you can see the blog is no-longer on Tumblr (although I think I might keep posting there too so people can use the Tumblr dashboard. When Kottke.org was redesigned he created a Tumblr blog where he cross-posts everything and found it to be a good thing). I am running the blog on a Ghost installation. I have found Ghost to be really easy to design for; it only has three template pages at the moment that you need in your theme.
I will try to write some posts this year too!