what is the new decade called probably 2011 is the new decade or is it going to be 2010

what is the new decade called i think the new decade is called 2011, as new a new sequence of 10 years is a decade, though some people say the new decade is starts at 2010.

so there is a bit of debate over what is the new decade called?, some say 2010 and some day 2011.