There are SO many new features in the updated DasBlog that I don't even know where to start. Here's just a quick list of the things I really love:

1) Scrolling through the entries - if you click a specific entry's title, you will get a "last blog entry" | main | "next blog entry" section above the entry's title and you can scroll through the blog entries. It's really a nice way of reading through a series of blog entries.

2) the SUPER cool complete archive by category - here's a link: http://www.sqlskills.com/blogs/kimberly/Archives.aspx

And - those are just a couple of my favorite new features with 1.9 but you can read more about it from the source - Scott Hanselman - here. Definitely worth the upgrade, definitely worth the consideration to move from some other blog engines (depending on how much you blog) OR consider creating your own blog (here's why)........

Enjoy,
kt