ICANN has published the latest version of the Applicant Guidebook. This September 19 version brings only limited changes compared to the May 30, 2011 guidebook.
The first and most noticeable is the inclusion of an actual first application round start and end date, and time!
Quoting from the new guidebook: The user registration and application submission periods open at 00:01 UTC 12 January 2012. The user registration period closes at 23:59 UTC 29 March 2012.
The new AG also takes into account the June 20, 2011 ICANN Board resolution which officially gave the new gTLD program a green light but included extra instructions. For instance, module 2 of the guidebook now describes how key terms associated with the Red Cross and the Olympic Committee cannot be requested as gTLDs.
These rules are subject to change however, as ICANN community work continues on issues such as whether the aforementioned organisations should also benefit from having their names protected at the second level, and how support can be provided (financial or otherwise) to needy applicants.