The 2001 Edition is the current code-referenced version of the Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings. The 2009 International Residential Code (IRC) contains an erroneous reference to the 2008 WFCM. ICC has acknowledged the error and will be correcting it in the next printing of the IRC. The next version of the WFCM is tentatively slated as the 2012 Edition to coincide with the 2012 IRC.