ICANN has issued today a new version of the gTLD Applicant Guidebook. The Applicant Guidebook describes the requirements and procedures for submitting applications for new generic top-level domains (gTLDs), as well as the criteria and procedures for evaluation. See http://newgtlds.icann.org/en/about for more information about the New gTLD Program.
The application submission period is now closed, and changes have not been made to the application process. However, in anticipation of the opening of the objection filing period, the relevant information has been updated in the Guidebook.
A summary of the changes can be found at http://newgtlds.icann.org/en/applicants/agb/summary-changes-applicant-guidebook-04jun12-en.pdf [PDF, 121 KB]. The summary provides the text revisions in redline, as well as a description and rationale for the changes.