The good old template editor got some new feature: a file navigator. It lists the files in the current directory, and lets you navigate in other directories. A click on a filename is all it takes to go edit that file. There are settings to allow/disallow the listing/editing of non-writeable files and the config file, and to allow/disallow the navigation in ../ and other directories that are not in the b2 directory.
There is one bug to fix: on Unix, it would tell you that there's an error when you first load it, that's gonna be a trivial bug to fix.
Because it doesn't use much CaféLog-specific code, I will port it to b2 0.5.x as a hack.

Another update is the bookmarklet in IE, which now will look like the one in Mozilla/NS6: Windows IE will use the non-standard 'filter:' thing, while Mac IE will use a transparent PNG image like in Mozilla.