Whats the difference between the old and new 2011 Ford Fiesta?

I'm thinking of trading in my old 09 plate but wondered what the new 11 plate Ford Fiesta was like?|||upgrades on equipment and interior etc easier to get a publication for that model and the newer one .try asking at a main dealer for a brochure on each. also check at a second hand and new cars magazines data pages .a few have specific changes listed and dates when implemented.|||Had a look for Ford Fiesta on a car dealers website not much difference.other than new engine and equipment levels the new ford fiesta is more or less the same as the 2009 one.|||Along with the newer engine, it will have much better electronics and safety features just like newer generations of anything would.