We are now accepting new entries for the next TOP500 list which will be published during the SC conference in Denver, CO on November 17th, 2013.
The deadline for the submission of new sites for the November release of the TOP500 List is October 25th (23:59 PST). All system reported have to be installed by November 1st. The last date for submitting linkpack updates is also November 1st ( Systems must have been submitted by the deadline above).
For more details, please visit the project page with details about submissions and guidelines.