You often see a huge stink created anytime someone gets word that a company or major body bans a new and upcoming software or Operating System. In the case of The National Institute of Standards and Technology however, they simply want an interim period to allow them to test it, and see no reason why they won’t be implementing it in the future.
The prestigious National Institute of Standards and Technology has put a ban on Windows Vista, but that's standard procedure, according to NIST's chief information officer.