An update has just been put up on the ICal list page. It is quite a major update wrt to variety and configuration options. I have released it earlier than intended with most of the usual functionality there - enough to satisfy those of you that asked for more!
A complete spec will have to wait a bit longer!
See http://webdesign.anmari.com/web-tools/plugins-and-widgets/ical-events-list/
or http://wordpress.org/extend/plugins/amr-ical-events-list/screenshots/