Icons, colors and dynamic
The current devel version (r2429) brings more changes to the config, sorry.
The first, thing is an addition to the icons: Before, only X BitMaps were allowed, but it's possible to use X PixMaps now, too. subtle can detect the file type and handle it accordingly. This doesn't sound like a big improvement and generally besides colors there isn't a big difference between bitmaps and pixmaps at all, icons can just be colorful.
In case you just updated and the current active client (title) is black on black, this is caused by another color change:
Old color names
# # # color :panel_bg, "#757575" color :panel_bg, "#202020"
*> *> *> => =>
New color names
color :title_fg, "#fecf35" color :title_bg, "#202020" color :title_border, "#303030" color :stipple, "#757575" color :panel, "#202020"
Welcome back, old and controversial feature - views can be dynamic again:
view "dynamic" do match "xterm" icon "icon.xpm" dynamic true end