For the last 10 years, people have chosen to say the current year as Two Thousand and …. This totally goes against our established patterns of year pronunciation. Pick any year in the last millennium. Now say it out loud. Did you say One Thousand Nine Hundred and Ninety Eight? Nope. You said Nineteen Ninety Eight.
Twenty Eleven is the first year of the Third Millennium to have more syllables when you say it as Two Thousand and Eleven. I, personally, do not believe that we will automatically switch. We will need a boost, a movement, a revolution.
Join this revolution. Your only sacrifice is to streamline your current habits and say Twenty Eleven. Others will follow by our example. There will be no need to correct anyone (that just makes people resist change even more).
Say it with me, “Twenty Eleven, Happy New Year!”