Mark's added Twitter Card and Facebook Open Graph support, and together we've fixed a few oddities and bugs that have popped up in the leap from 2.0 to 4.6.
Mark and I think that's the fun of it, though. Now, to be clear, DasBlog was amazing in 20 but it's aging now. Mark and I thought it would be nice to upgrade DasBlog to. The question 'is DasBlog dead' is asked a lot, but the answer is really 'DasBlog is done.' For years it has been very feature-full and feature-complete. DasBlog is very old, and used to be very actively developed.
In my case I've been doing some pair programming with Mark Downie on DasBlog, the blog system that runs this blog right here. NET 4.6, as well as ASP.NET 5 apps on the Core CLR.
I've been working with Visual Studio 2015 lately, even for older projects.