I've released a new shapshot of Icarus Verilog development. This adds new features and a variety of bug fixes. Go to the Icarus Verilog home page at <http://www.icarus.com/eda/verilog> and follow the "snapshots" link to the source download site. The release notes are here:
<ftp://ftp.icarus.com/pub/eda/verilog/snapshots/verilog-20061009.txt>