Just because once upon a time the root nameservers and the most common Top-Level-Domain nameservers were one in the same doesn't mean you can freely refer to the TLD servers as "root" servers!
You might want to check your RFC's. There's root servers and TLD root-servers, not to mention ccTLD root servers. Also, if you're running public registration at the SLD level (like UK is), you also have SLD root servers. Randy is technically correct, it was a notice about TLD root servers. However, this does not invalidate its operational importance. On DOMAIN-POLICY we have been taking NSI to task for making unannounced changes to the core structure. Albeit, mostly changes to whois (which some of y'all have complained about). I agree that NSI posting this notice on NANOG is a GoodThing(tm). Would you rather a tad too much notice, or none at all? <sheesh>.