TMCH unclear or ICANN web site needs update?

When I worked for Airbus SAS, one word was in every mouth: "P-R-E-C-I-S-I-O-N" (accuracy). I wish it was the same on the ICANN web site.

On the ICANN FAQs, in "What are Trademark Claims and Sunrise Services?", I read: "The Trademark Claims period follows the Sunrise period and runs for at least the first 90 days of an initial operating period of general registration" (http://newgtlds.icann.org/en/about/trademark-clearinghouse/faqs).

The "at least" really annoys me because it I do not read the same on the official Trademark Clearinghouse web site where I read: "Trademark Claims services will be provided for a 90 day period as of general availability when a TLD launches" (http://trademark-clearinghouse.com/help/faq/how-will-trademark-claims-service-function).

So, is it 90 days maximum or 90 days at least?