Today's tweak of the homepage design is to add javascript drop-down menus to the archive headings at the top of the center pane of the homepage; instead of just reaching the archive pages by clicking on the headings, if you hover over them -- or actually, hover over the downward pointing chevrons next to them -- little drop-down menus appear containing links to the latest, or most important recent, items within that section.
As usual with such newer technology, older browsers may not support it, but I think the only negative consequence of this implementation is that older browsers would simply not display the drop-down menus... the links to the archive pages would still be valid. As always, if you or any of your team notice any problems or unforeseen negative consequences, you're urged to notify the webmaster ...