This version of Midori has a focus on optimizations below the hood. The most important point here is that from now on, you need at least WebKitGTK+ 1.1.1, GTK+ 2.10, Glib 2.16 and libsoup 2.25.2. Lots of tricks to maintain compatibility were dropped. Supporting ancient versions of WebKit became increasingly hard, and various optimizations are in place already. The internal source view was also dropped, and the default text editor is used, or whatever you chose in the preferences. As for a really exciting feature, downloading of files works if you have WebKitGTK+ 1.1.3, including a sidepanel and progress bars inside the statusbar. As a goodie I added an extension called Colourful Tabs, which took me less than two hours to write and is quite nice for that.
So [http://goodies.xfce.org/releases/midori/midori-0.1.5.tar.bz2 download midori v0.1.5] already!