This week, over 30 supporting documents were posted to EPA's proposed Waters of the US (WOTUS) rule docket.
There will be additional documents placed in the docket. Tomorrow, EPA will announce (in the Federal Register) availability of its Science Advisory Board final peer review of the EPA’s draft report "Connectivity of Streams and Wetlands to Downstream Waters: A Review and Synthesis." It is entirely possible that it could appear at the SAB reports web site prior to posting in the FR docket.
The rule is open for comment until November 14.