This World cup is basically scheduled next year!
Actually, next year, two world cups with IPL is impossible (3 Major Tournaments) & even the CWC is a 50 over one, which is long enough.
(Of course IPL is not in Calender, but when its going on, many international teams won't be playing for atleast a month.)
So, ICC have pre poned 2011 T20 WC to 2010!